{"kind": "product", "path": "vulns/packagist/league%2Fcommonmark", "name": "league/commonmark", "product": "league/commonmark", "ecosystem": "Packagist", "items": [{"id": "CVE-2026-105830", "noindex": false, "published": "2026-10-08T14:10:31.055Z", "modified": "2026-10-08T17:03:50.815Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00367, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-105830", "title": "league/commonmark 2.0.0 before 2.10.2 Quadratic DoS via TableStartParser", "description": "league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart() block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters, forcing repeated full-buffer strpos scans that exhaust PHP worker CPU.", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-3q6v-r5mr-hxv8", "https://www.vulncheck.com/advisories/league-commonmark-2.0.0-before-2.10.2-quadratic-dos-via-tablestartparser", "https://nvd.nist.gov/vuln/detail/CVE-2026-105830"], "fixes": ["2.10.2"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-105829", "noindex": false, "published": "2026-10-08T14:10:30.523Z", "modified": "2026-10-10T03:05:39.203Z", "cvss": 5.3, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N", "severity": "medium", "epss": 0.00204, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-105829", "title": "League CommonMark 1.3.0 before 2.10.2 Stored XSS via DisallowedRawHtml Bypass", "description": "League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone <script or <iframe line followed by a block supplying attributes like src or onload, executing stored scripts in viewers' browsers under default GFM settings.", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-97jj-33gv-5xf9", "https://www.vulncheck.com/advisories/league-commonmark-1.3.0-before-2.10.2-stored-xss-via-disallowedrawhtml-bypass", "https://nvd.nist.gov/vuln/detail/CVE-2026-105829"], "fixes": ["2.10.2"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2024-58382", "noindex": false, "published": "2026-09-09T13:31:56.196Z", "modified": "2026-10-08T15:21:13.339Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00278, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2024-58382", "title": "league/commonmark before 2.6.0 Denial of Service via Quadratic Complexity", "description": "league/commonmark versions before 2.6.0 contain polynomial time complexity vulnerabilities in Markdown parsing that allow attackers to cause denial of service. Attackers can submit carefully crafted Markdown inputs designed to trigger worst-case performance, and sending multiple requests in parallel exhausts CPU resources and PHP-FPM processes.", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-c2pc-g5qf-rfrf", "https://www.vulncheck.com/advisories/league-commonmark-before-2.6.0-denial-of-service-via-quadratic-complexity", "https://nvd.nist.gov/vuln/detail/CVE-2024-58382"], "fixes": ["2.6.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-86434", "noindex": false, "published": "2026-09-07T12:53:53.194Z", "modified": "2026-10-08T15:25:54.536Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00509, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-86434", "title": "commonmark 2.0.0 through 2.8.3 Denial of Service via Slug Collision", "description": "league/commonmark versions >= 2.0.0 and < 2.8.4 (patched in 2.9.0) contain a denial of service vulnerability in UniqueSlugNormalizer::normalize(), which restarts its numeric-suffix search from 1 on every slug collision, resulting in O(K^2) time complexity for K headings that collapse to the same base slug. The vulnerable path is reached when HeadingPermalinkExtension, FootnoteExtension, or TableOfContentsExtension is registered. An unauthenticated attacker can force many headings onto a single base slug (e.g., via empty ATX headings, identical heading text, or punctuation-only headings) in a small Markdown document, consuming excessive CPU an", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-mh25-x5hq-wrqp", "https://www.vulncheck.com/advisories/commonmark-2.0.0-through-2.8.3-denial-of-service-via-slug-collision", "https://nvd.nist.gov/vuln/detail/CVE-2026-86434"], "fixes": ["2.9.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-86431", "noindex": false, "published": "2026-09-07T12:53:51.246Z", "modified": "2026-10-08T15:25:52.798Z", "cvss": 6.9, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N", "severity": "medium", "epss": 0.00388, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-86431", "title": "commonmark before 2.9.1 XSS via AttributesExtension form feed bypass", "description": "league/commonmark (thephpleague/commonmark) versions >= 2.7.0 and < 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte (e.g. {\\x0Conclick=\"alert(1)\"}) bypasses the AttributesHelper::filterAttributes() 'on*' event-handler filter because PHP's trim() does not strip U+000C, causing the attribute to be written verbatim into the output where browsers parse it as a genuine event handler. The same prefix also defeats the allow_unsafe_links check, allowing javascript: URIs through href/src attributes even when allow_unsafe_links is false. Exploitation requires", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-f8fg-pg57-v4j8", "https://github.com/thephpleague/commonmark/commit/43207253ea5f14867c77c697cd3838c446cadcea", "https://www.vulncheck.com/advisories/commonmark-before-2.9.1-xss-via-attributesextension-form-feed-bypass"], "fixes": ["2.9.1"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-86430", "noindex": false, "published": "2026-09-07T12:53:50.575Z", "modified": "2026-10-08T15:25:52.185Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00493, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-86430", "title": "league/commonmark before 2.9.1 Denial of Service via parsing", "description": "league/commonmark versions before 2.9.1 contain multiple denial of service vulnerabilities in fenced code block detection, reference link label lookup, and emphasis delimiter processing that perform super-linear work on crafted input. Attackers can submit specially crafted Markdown with long backtick runs, nested brackets, or delimiter sequences to consume disproportionate CPU time and prevent legitimate requests from completing.", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-j8pm-gj4c-rq4x", "https://www.vulncheck.com/advisories/league-commonmark-before-2.9.1-denial-of-service-via-parsing", "https://nvd.nist.gov/vuln/detail/CVE-2026-86430"], "fixes": ["2.9.1"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-86429", "noindex": false, "published": "2026-09-07T12:53:49.905Z", "modified": "2026-10-08T15:25:51.367Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00515, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-86429", "title": "commonmark before 2.9.1 Denial of Service via SmartPunct and Attributes", "description": "The league/commonmark (thephpleague/commonmark) library in versions >= 1.5.0 and < 2.9.1 contains quadratic parsing complexity in its SmartPunctExtension and AttributesExtension. When either extension is explicitly registered on the Environment (they are not enabled by default and are excluded from the standard CommonMark and GitHub-Flavored Markdown converters), an unauthenticated attacker can submit small, specially crafted Markdown documents — such as text alternating with unpaired quotes, contiguous runs of block-level attribute blocks, or repeated class attributes — to trigger disproportionate CPU consumption and cause a denial of servic", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-jjv6-8j6v-6j52", "https://www.vulncheck.com/advisories/commonmark-before-2.9.1-denial-of-service-via-smartpunct-and-attributes", "https://nvd.nist.gov/vuln/detail/CVE-2026-86429"], "fixes": ["2.9.1"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-86428", "noindex": false, "published": "2026-09-07T12:53:49.235Z", "modified": "2026-10-08T15:25:50.773Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00493, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-86428", "title": "commonmark 1.5.0 before 2.10.0 Denial of Service via Attributes", "description": "commonmark versions from 1.5.0 before 2.10.0 contain a denial of service vulnerability in the AttributesExtension when processing distinctly-named attributes. Attackers can submit Markdown with numerous distinct attribute names to cause quadratic-time attribute merging and filtering, consuming disproportionate CPU resources and preventing legitimate requests from completing.", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-8rr7-cvq3-gmfh", "https://www.vulncheck.com/advisories/commonmark-1.5.0-before-2.10.0-denial-of-service-via-attributes", "https://nvd.nist.gov/vuln/detail/CVE-2026-86428"], "fixes": ["2.10.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "GHSA-mj63-m3rc-8ppr", "noindex": false, "published": "2026-08-06T20:42:54Z", "modified": "2026-08-06T20:45:15.556829535Z", "cvss": 5.3, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "severity": "medium", "epss": null, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/ghsa-mj63-m3rc-8ppr", "title": "league/commonmark: Denial of service via deeply nested XML output", "description": "### Impact\n\n`XmlRenderer` pretty-prints XML by emitting depth-proportional indentation whitespace for **every** opening and closing tag. For a tree of depth n, the indentation alone sums to **O(n²)** bytes of output (and corresponding memory), reachable through `MarkdownToXmlConverter` — e.g. `str_repeat('> ', $depth) . \"x\\n\"`, a single line of nested blockquotes — or through a direct `XmlRenderer::renderDocument()` call on an attacker-influenced AST.\n\nThis affects applications that convert untrusted Markdown to XML, which is an **opt-in** output path. The parser's `max_nesting_level` bounds the depth of *parser-created* trees, but its defaul", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-mj63-m3rc-8ppr", "https://github.com/thephpleague/commonmark/commit/b5ac8c3947ca81844e85a09c7e0a5b4148bde2e1", "https://github.com/thephpleague/commonmark"], "fixes": ["2.9.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "GHSA-jfm3-95jq-q3rf", "noindex": false, "published": "2026-08-06T20:40:53Z", "modified": "2026-08-06T20:45:15.564084730Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": null, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/ghsa-jfm3-95jq-q3rf", "title": "league/commonmark:  Denial of service via duplicate footnote definitions", "description": "### Impact\n\nThe Footnote extension records one backref per footnote *reference* and then appends the **entire** backref list for **every** footnote *definition* block in the document, without ever de-duplicating or removing repeated definitions of the same label (`GatherFootnotesListener`, populated by `NumberFootnotesListener`). A document that references a single label N times and also supplies N duplicate `[^a]:` definitions of that label therefore produces **N × N** `FootnoteBackref` nodes, so output size, parse time, and peak memory are all **O(N²)**.\n\nReaching the vulnerable path requires `FootnoteExtension` to be registered on the `Env", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-jfm3-95jq-q3rf", "https://github.com/thephpleague/commonmark/commit/66028124a17ba193da7b11cc3dfda92df21bfbf4", "https://github.com/thephpleague/commonmark"], "fixes": ["2.9.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "GHSA-g2gp-3wwq-f4ph", "noindex": false, "published": "2026-08-06T20:39:52Z", "modified": "2026-08-06T20:45:15.558862305Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": null, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/ghsa-g2gp-3wwq-f4ph", "title": "league/commonmark: Denial of service via adjacent inline attribute blocks", "description": "### Impact\n\nWith the Attributes extension enabled, `AttributesListener::findTargetAndDirection()` resolves each attribute node's target by walking outward through its siblings. For a run of N adjacent inline attribute blocks placed at the start of a block (with nothing to their left), each node scans the **entire** sibling list to the far-right end before giving up and falling back to the parent. Each resolution is therefore Θ(N) and the whole run is **Θ(N²)**.\n\nReaching the path requires `AttributesExtension` (opt-in, but first-party: `League\\CommonMark\\Extension\\Attributes\\AttributesExtension`). No other configuration matters — the quadrati", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-g2gp-3wwq-f4ph", "https://github.com/thephpleague/commonmark/commit/2d4c0fafa62501be919262064cffa6d71687430b", "https://github.com/thephpleague/commonmark"], "fixes": ["2.9.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-71488", "noindex": false, "published": "2026-08-06T20:37:17.488Z", "modified": "2026-08-07T17:17:05.299Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": 0.0063, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-71488", "title": "league/commonmark: Quadratic-time denial of service when parsing crafted Markdown", "description": "league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 0.6.0 until 2.9.0, specially crafted Markdown lines can cause the parser to have quadratic time complexity when converting, because several parsing paths repeatedly rescan growing portions of a line to translate between character positions and byte positions, and the Autolink extension can also copy and validate the remaining line at every URL-like prefix, allowing an attacker who can submit Markdown for conversion to consume disproportionate CPU time with a comparatively small request. This issue is fixed in 2.9.0.", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-2q4p-g7hv-5rgv", "https://github.com/thephpleague/commonmark/commit/a6ef6cdc308dfa39a34239c35818e75892a0e6a8", "https://github.com/thephpleague/commonmark/commit/a70979ea0d7d3377bd7127536748454a922bf5eb"], "fixes": ["2.9.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-71478", "noindex": false, "published": "2026-08-06T20:30:32.045Z", "modified": "2026-08-07T17:05:57.244Z", "cvss": 6.1, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "severity": "medium", "epss": 0.00355, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-71478", "title": "league/commonmark: AttributesExtension href/src unsafe-link filter bypass via embedded control bytes", "description": "league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control character, in a javascript: URL that browsers discard before parsing the scheme, causing the browser to still execute the script even when the unsafe-link filter is enabled. This issue is fixed in 2.9.0.", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-29pj-957v-52mc", "https://github.com/thephpleague/commonmark/commit/493a5aa7d65754b73846006eaff9c2c4431a8e2c", "https://github.com/thephpleague/commonmark/releases/tag/2.9.0"], "fixes": ["2.9.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-33347", "noindex": false, "published": "2026-03-24T19:26:23.872Z", "modified": "2026-03-26T19:52:12.754Z", "cvss": 6.3, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N", "severity": "medium", "epss": 0.00329, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-33347", "title": "league/commonmark has an embed extension allowed_domains bypass", "description": "league/commonmark is a PHP Markdown parser. From version 2.3.0 to before version 2.8.2, the DomainFilteringAdapter in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the domain-matching regex. An attacker-controlled domain like youtube.com.evil passes the allowlist check when youtube.com is an allowed domain. This issue has been patched in version 2.8.2.", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-hh8v-hgvp-g3f5", "https://github.com/thephpleague/commonmark/commit/59fb075d2101740c337c7216e3f32b36c204218b", "https://github.com/thephpleague/commonmark/releases/tag/2.8.2"], "fixes": ["2.8.2"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2026-30838", "noindex": false, "published": "2026-03-07T16:00:32.351Z", "modified": "2026-03-09T18:26:15.482Z", "cvss": 5.1, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N", "severity": "medium", "epss": 0.00255, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2026-30838", "title": "league/commonmark: DisallowedRawHtml extension bypass via whitespace in HTML tag names", "description": "league/commonmark is a PHP Markdown parser. Prior to version 2.8.1, the DisallowedRawHtml extension can be bypassed by inserting a newline, tab, or other ASCII whitespace character between a disallowed HTML tag name and the closing >. For example, <script\\n> would pass through unfiltered and be rendered as a valid HTML tag by browsers. This is a cross-site scripting (XSS) vector for any application that relies on this extension to sanitize untrusted user input. All applications using the DisallowedRawHtml extension to process untrusted markdown are affected. Applications that use a dedicated HTML sanitizer (such as HTML Purifier) on the rende", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-4v6x-c7xx-hw9f", "https://nvd.nist.gov/vuln/detail/CVE-2026-30838"], "fixes": ["2.8.1"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2025-46734", "noindex": false, "published": "2025-05-05T19:52:59.521Z", "modified": "2025-05-06T13:47:03.821Z", "cvss": 6.4, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "severity": "medium", "epss": 0.00378, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2025-46734", "title": "league/commonmark Cross-site Scripting vulnerability in Attributes extension", "description": "league/commonmark is a PHP Markdown parser. A cross-site scripting (XSS) vulnerability in the Attributes extension of the league/commonmark library (versions 1.5.0 through 2.6.x) allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configuration options such as `html_input: 'strip'` and `allow_unsafe_links: false` to mitigate cross-site scripting (XSS) attacks by stripping raw HTML and disallowing unsafe links. However, when the Attributes Extension is enabled, it introduces a way for users to inject arbitrary HTML attributes into elements via Markdown syntax using curly braces. Versio", "references": ["https://github.com/thephpleague/commonmark/security/advisories/GHSA-3527-qv2q-pfvx", "https://github.com/thephpleague/commonmark/commit/f0d626cf05ad3e99e6db26ebcb9091b6cd1cd89b", "https://nvd.nist.gov/vuln/detail/CVE-2025-46734"], "fixes": ["2.7.0"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2019-10010", "noindex": false, "published": "2019-03-24T17:58:54.000Z", "modified": "2024-08-04T22:10:08.687Z", "cvss": 6.1, "cvss_vector": "", "severity": "medium", "epss": 0.0105, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2019-10010", "title": "CVE-2019-10010", "description": "Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library before 0.18.3 allows remote attackers to insert unsafe links into HTML by using double-encoded HTML entities that are not properly escaped during rendering, a different vulnerability than CVE-2018-20583.", "references": ["https://github.com/thephpleague/commonmark/issues/353", "https://github.com/thephpleague/commonmark/releases/tag/0.18.3", "https://nvd.nist.gov/vuln/detail/CVE-2019-10010"], "fixes": ["0.18.3"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}, {"id": "CVE-2018-20583", "noindex": false, "published": "2018-12-30T05:00:00.000Z", "modified": "2024-09-16T21:57:28.330Z", "cvss": 6.1, "cvss_vector": "", "severity": "medium", "epss": 0.01863, "kev": false, "exploits": [], "stacks": [{"name": "php", "path": "vulns/stack/php", "slug": "php"}], "path": "vulns/cve-2018-20583", "title": "CVE-2018-20583", "description": "Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote attackers to insert unsafe URLs into HTML (even if allow_unsafe_links is false) via a newline character (e.g., writing javascript as javascri%0apt).", "references": ["https://commonmark.thephpleague.com/changelog/", "https://github.com/thephpleague/commonmark/issues/337", "https://github.com/thephpleague/commonmark/releases/tag/0.18.1"], "fixes": ["0.18.1"], "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}]}], "total": 18, "unknown_count": 0, "release_unconfirmed": false, "page": 1, "pages": 1, "filtered": false, "noindex": false, "filters": {}, "page_size": 20, "products": [{"name": "league/commonmark", "path": "vulns/packagist/league%2Fcommonmark", "ecosystem": "Packagist"}], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}, {"name": "web", "path": "vulns/stack/web", "slug": "web"}, {"name": "php", "path": "vulns/stack/php", "slug": "php"}, {"name": "python", "path": "vulns/stack/python", "slug": "python"}, {"name": "node", "path": "vulns/stack/node", "slug": "node"}, {"name": "database", "path": "vulns/stack/database", "slug": "database"}, {"name": "containers", "path": "vulns/stack/containers", "slug": "containers"}, {"name": "network", "path": "vulns/stack/network", "slug": "network"}, {"name": "applications", "path": "vulns/stack/applications", "slug": "applications"}], "versions": [], "stats": {"recent": 2, "kev": 0}, "lastmod": "2026-10-10T03:05:39.203Z", "early_advisories": [], "license": "You may freely use the PatchFirst selection and our additions (priorities, early warnings, texts, summaries and aggregates) for your own purposes, including internal business use. Resale, commercial distribution and bulk mirroring of this selection or these additions require a written agreement with the operator. Whenever you use or publish the selection or our additions, credit PatchFirst (https://patchfirst.dev/vulns/) with this link to the regional feed page. Original records from open sources remain subject to their respective licenses and terms. These conditions do not restrict your rights to the original data, which you can obtain directly from those sources.", "terms_url": "https://patchfirst.dev/vulns/#feed-terms", "attribution": {"name": "PatchFirst", "url": "https://patchfirst.dev/vulns/"}, "source_changes": "Records are selected, normalized and combined by PatchFirst; summaries and translations may be added. News is credited with a link to the original source in each entry.", "sources": [{"id": "cve", "name": "CVE List / CVE.org", "url": "https://www.cve.org/", "license": "CVE Terms of Use", "terms_url": "https://www.cve.org/Legal/TermsOfUse", "notice": "Copyright © 1999–2021, The MITRE Corporation. LICENSE Submissions : For all materials you submit to the Common Vulnerabilities and Exposures (CVE™), you hereby grant to The MITRE Corporation (MITRE) and all CVE Numbering Authorities (CNAs) a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute such materials and derivative works. Unless required by applicable law or agreed to in writing, you provide such materials on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. CVE Usage : MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. DISCLAIMERS ALL DOCUMENTS AND THE INFORMATION CONTAINED THEREIN PROVIDED BY MITRE ARE PROVIDED ON AN \"AS IS\" BASIS AND THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE MITRE CORPORATION, ITS BOARD OF TRUSTEES, OFFICERS, AGENTS, AND EMPLOYEES, DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION THEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE."}, {"id": "osv", "name": "OSV", "url": "https://osv.dev/", "terms_url": "https://google.github.io/osv.dev/data/", "terms": "Upstream licenses vary; see the source catalog."}, {"id": "kev", "name": "CISA KEV", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "license": "CC0-1.0", "terms_url": "https://github.com/cisagov/kev-data/blob/develop/LICENSE"}, {"id": "epss", "name": "FIRST EPSS", "url": "https://www.first.org/epss/", "terms_url": "https://www.first.org/epss/faq", "terms": "Free public scores; attribution requested (FIRST EPSS, scores generated by Empirical Security)."}, {"id": "github-advisory", "name": "GitHub Advisory Database", "url": "https://github.com/advisories", "license": "CC-BY-4.0", "terms_url": "https://github.com/github/advisory-database/blob/main/LICENSE.md"}, {"id": "exploitdb", "name": "Exploit-DB", "url": "https://www.exploit-db.com/", "license": "GPL-2.0", "terms_url": "https://gitlab.com/exploit-database/exploitdb/-/blob/main/LICENSE.md"}, {"id": "metasploit", "name": "Metasploit", "url": "https://github.com/rapid7/metasploit-framework", "license": "BSD-3-Clause", "terms_url": "https://github.com/rapid7/metasploit-framework/blob/master/LICENSE", "notice": "Copyright (c) 2006-2026, Rapid7, Inc.\nLicense: BSD-3-clause\n Redistribution and use in source and binary forms, with or without modification,\n are permitted provided that the following conditions are met:\n .\n * Redistributions of source code must retain the above copyright notice,\n this list of conditions and the following disclaimer.\n .\n * Redistributions in binary form must reproduce the above copyright notice,\n this list of conditions and the following disclaimer in the documentation\n and/or other materials provided with the distribution.\n .\n * Neither the name of Rapid7, Inc. nor the names of its contributors\n may be used to endorse or promote products derived from this software\n without specific prior written permission.\n .\n THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\n ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR\n ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON\n ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\n SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."}, {"id": "nuclei", "name": "Nuclei Templates", "url": "https://github.com/projectdiscovery/nuclei-templates", "license": "MIT", "terms_url": "https://github.com/projectdiscovery/nuclei-templates/blob/main/LICENSE.md", "notice": "MIT License\n\nCopyright (c) 2025 ProjectDiscovery, Inc.\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE."}, {"id": "linux-kernel", "name": "Linux kernel releases", "url": "https://www.kernel.org/", "license": "CC-BY-SA-4.0", "terms_url": "https://www.kernel.org/legal.html", "notice": "Copyright (C) 1997-2014 by The Linux Kernel Organization, Inc."}]}