{"kind": "product", "path": "vulns/debian-13/mistune", "name": "mistune", "product": "mistune", "ecosystem": "Debian:13", "items": [{"id": "CVE-2026-115355", "noindex": false, "published": "2026-10-22T19:13:31.904Z", "modified": "2026-10-22T19:13:31.904Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00387, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115355", "title": "Mistune before 3.3.0 Path Traversal and XSS via Include Directive", "description": "Mistune before 3.3.0 contains a path traversal vulnerability in the Include directive that allows attackers to read arbitrary files by supplying ../ sequences in include paths. Attackers can also inject HTML through unescaped error messages and included file contents to perform cross-site scripting even when escape=True is set.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-h7ww-273w-6cm8", "https://www.vulncheck.com/advisories/mistune-before-3.3.0-path-traversal-and-xss-via-include-directive", "https://nvd.nist.gov/vuln/detail/CVE-2026-115355"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-115354", "noindex": false, "published": "2026-10-22T19:13:31.132Z", "modified": "2026-10-22T19:13:31.132Z", "cvss": 7.1, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00333, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115354", "title": "Mistune before 3.3.0 Arbitrary Local File Read via Include Directive", "description": "Mistune before 3.3.0 contains a path traversal vulnerability in the opt-in Include directive that allows attackers to read local files by supplying relative or absolute include paths. Attackers who submit Markdown rendered via Markdown.read() can disclose files such as /etc/passwd and inject unescaped HTML or script content into rendered output.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-jhcm-5rpf-j3wv", "https://www.vulncheck.com/advisories/mistune-before-3.3.0-arbitrary-local-file-read-via-include-directive", "https://nvd.nist.gov/vuln/detail/CVE-2026-115354"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-115353", "noindex": false, "published": "2026-10-22T19:13:30.422Z", "modified": "2026-10-22T19:13:30.422Z", "cvss": 9.2, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N", "severity": "critical", "epss": 0.00387, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115353", "title": "Mistune before 3.3.0 Path Traversal via include Directive", "description": "Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-9jjx-3hq3-hx4j", "https://www.vulncheck.com/advisories/mistune-before-3.3.0-path-traversal-via-include-directive", "https://nvd.nist.gov/vuln/detail/CVE-2026-115353"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-115352", "noindex": false, "published": "2026-10-22T19:13:28.427Z", "modified": "2026-10-23T21:07:23.519Z", "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": 0.00359, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115352", "title": "Mistune before 3.3.0 Quadratic-Time DoS via Unmatched Brackets in Inline Parser", "description": "Mistune before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser that allows unauthenticated attackers to exhaust CPU by submitting long runs of unmatched '[' characters. Attackers can send small markdown payloads that trigger O(N^2) parse_link_text and parse_link_label probing, occupying rendering workers for 30+ seconds per 16 KB input.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-xrpv-r66x-8p7j", "https://www.vulncheck.com/advisories/mistune-before-3.3.0-quadratic-time-dos-via-unmatched-brackets-in-inline-parser", "https://nvd.nist.gov/vuln/detail/CVE-2026-115352"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-115351", "noindex": false, "published": "2026-10-22T19:13:27.678Z", "modified": "2026-10-22T19:13:27.678Z", "cvss": 5.3, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N", "severity": "medium", "epss": 0.00221, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115351", "title": "Mistune 3.2.1 before 3.3.0 CSS Injection via Figure Directive figwidth Option", "description": "Mistune from 3.2.1 before 3.3.0 contains a CSS injection vulnerability that allows attackers controlling markdown input to inject arbitrary style declarations via the unvalidated figwidth option of the figure directive. Attackers can append declarations like background:url() to the rendered figure style attribute, forcing victim browsers to send requests to attacker servers and leak attribute values.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-xmwc-wjpr-q378", "https://www.vulncheck.com/advisories/mistune-3.2.1-before-3.3.0-css-injection-via-figure-directive-figwidth-option", "https://nvd.nist.gov/vuln/detail/CVE-2026-115351"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-115350", "noindex": false, "published": "2026-10-22T19:13:26.891Z", "modified": "2026-10-22T19:13:26.891Z", "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": 0.00188, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115350", "title": "Mistune before 3.3.0 Stored XSS via Include Directive HTML Files", "description": "Mistune before 3.3.0 contains a cross-site scripting vulnerability in the Include directive that emits included .html, .xhtml, or .htm file content as raw block_html tokens. Attackers who can plant an HTML file readable by the renderer can reference it via an include directive, combined with path traversal, to execute stored scripts when escape=False is set.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-96vr-jm8v-g22j", "https://www.vulncheck.com/advisories/mistune-before-3.3.0-stored-xss-via-include-directive-html-files", "https://nvd.nist.gov/vuln/detail/CVE-2026-115350"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-115349", "noindex": false, "published": "2026-10-22T19:13:26.171Z", "modified": "2026-10-22T19:13:26.171Z", "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": 0.00343, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115349", "title": "Mistune 3.0.0 before 3.3.0 Denial of Service via Nested Bracket Parsing", "description": "Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity denial of service vulnerability in the parse_link_text function in src/mistune/helpers.py. Attackers can submit markdown with deeply nested square brackets triggering quadratic parsing time, exhausting server CPU with small crafted requests.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-3q64-rw38-243v", "https://www.vulncheck.com/advisories/mistune-3.0.0-before-3.3.0-denial-of-service-via-nested-bracket-parsing", "https://nvd.nist.gov/vuln/detail/CVE-2026-115349"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-115348", "noindex": false, "published": "2026-10-22T19:13:25.416Z", "modified": "2026-10-23T21:07:57.729Z", "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": 0.00359, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115348", "title": "Mistune before 3.3.0 Quadratic-Time DoS via parse_link_text", "description": "Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser's parse_link_text function that allows unauthenticated attackers to exhaust CPU with unbalanced brackets. Attackers can submit Markdown containing many unbalanced '[' or '![' characters, forcing repeated unbounded forward scans and tying up worker processes for minutes.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-x2gr-6qf2-fc9x", "https://www.vulncheck.com/advisories/mistune-before-3.3.0-quadratic-time-dos-via-parse-link-text", "https://nvd.nist.gov/vuln/detail/CVE-2026-115348"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-115347", "noindex": false, "published": "2026-10-22T19:13:24.689Z", "modified": "2026-10-22T19:13:24.689Z", "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": 0.00409, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-115347", "title": "Mistune before 3.3.0 Quadratic Denial of Service via parse_link_text", "description": "Mistune before 3.3.0 contains an inefficient algorithmic complexity vulnerability in parse_link_text that allows remote attackers to cause denial of service through unbalanced square brackets. Attackers can submit markdown containing long runs of unmatched brackets to mistune.html(), triggering repeated forward scans that stall worker processes for minutes.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-f32h-38gf-rg5r", "https://www.vulncheck.com/advisories/mistune-before-3.3.0-quadratic-denial-of-service-via-parse-link-text", "https://nvd.nist.gov/vuln/detail/CVE-2026-115347"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-76098", "noindex": false, "published": "2026-08-24T20:05:00.932Z", "modified": "2026-08-24T20:17:07.057Z", "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": 0.00488, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-76098", "title": "Mistune has Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown", "description": "Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.render_token() can exceed Python's recursion limit and raise RecursionError, allowing crafted Markdown to crash a parsing process. This issue is fixed in version 3.3.3", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-6m44-fpc8-c3rq", "https://github.com/lepture/mistune/commit/0938fb7", "https://nvd.nist.gov/vuln/detail/CVE-2026-76098"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59927", "noindex": false, "published": "2026-07-08T16:24:37.985Z", "modified": "2026-07-08T19:45:20.799Z", "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": 0.00529, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59927", "title": "Mistune directives/include: mutual `.. include::` recursion crashes the renderer with `RecursionError`, denial of service via two attacker-controlled markdown files", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, allowing two markdown files that include each other to trigger unbounded recursion, raise RecursionError, and crash the rendering request. This issue is fixed in version 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-8mpj-m6qm-5qr8", "https://github.com/lepture/mistune/commit/1bef343ade163fc3bb95572b15be720084cdb993", "https://github.com/lepture/mistune/releases/tag/v3.3.0"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59928", "noindex": false, "published": "2026-07-08T16:23:21.000Z", "modified": "2026-07-08T19:40:43.968Z", "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": 0.00651, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59928", "title": "Mistune block_parser: quadratic-time parsing on long lists of repeated reference-link definitions", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a Markdown document containing many repeated or distinct reference-link definitions causes quadratic work in src/mistune/block_parser.py and the ref_links environment dictionary handling, allowing denial of service through CPU exhaustion. This issue is fixed in version 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-ffq3-xpv3-j92q", "https://github.com/lepture/mistune/commit/2b04d7ba341c16ac78fe82d3076bdd5c3de87c69", "https://github.com/lepture/mistune/releases/tag/v3.3.0"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59924", "noindex": false, "published": "2026-07-08T16:22:11.116Z", "modified": "2026-07-08T17:10:47.834Z", "cvss": 5.9, "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "severity": "medium", "epss": 0.00462, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59924", "title": "Mistune: Arbitrary File Read via Include directive path traversal", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Include.parse() joins and normalizes user-supplied include paths without verifying that the result remains within the intended markdown directory, allowing crafted include paths to access files outside that directory when markdown files are processed using md.read(). This issue is fixed in version 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-r4rv-85jg-w4mf", "https://github.com/lepture/mistune/commit/1bef343ade163fc3bb95572b15be720084cdb993", "https://github.com/lepture/mistune/releases/tag/v3.3.0"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59929", "noindex": false, "published": "2026-07-08T16:20:38.139Z", "modified": "2026-07-09T14:41:36.793Z", "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": 0.00341, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59929", "title": "Mistune renderers/html.safe_url: HARMFUL_PROTOCOLS list misses legacy and chained schemes that historically chain to `javascript:` execution", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the safe_url filter in src/mistune/renderers/html.py blocks only javascript:, vbscript:, file:, and data: schemes, allowing legacy or chained schemes such as feed:, view-source:, jar:, livescript:, mocha:, ms-its:, mk:, and res: to reach rendered href and src attributes and potentially execute script in affected user agents. This issue is fixed in version 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-qfrw-5rxm-mhh2", "https://github.com/lepture/mistune/commit/c7101fcbb6e8790e8e39157c5ca2238fc6dd6cbc", "https://github.com/lepture/mistune/releases/tag/v3.3.0"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59925", "noindex": false, "published": "2026-07-08T16:18:43.786Z", "modified": "2026-07-08T19:44:48.084Z", "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": 0.00644, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59925", "title": "inline_parser: quadratic-time parsing on long runs of `**x**` and `***x***` emphasis pairs", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work in src/mistune/inline_parser.py because the parser scans forward for matching close markers from every potential opening run, allowing denial of service in default Mistune parsing. This issue is fixed in version 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-4j32-57v6-6g45", "https://github.com/lepture/mistune/commit/5de41fb8e527004dbc363e047a3c380c9288c74f", "https://github.com/lepture/mistune/releases/tag/v3.3.0"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59926", "noindex": false, "published": "2026-07-08T16:16:15.681Z", "modified": "2026-07-08T19:40:52.229Z", "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": 0.00327, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59926", "title": "Mistune: XSS via unescaped class option in Admonition directive", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, render_admonition() in src/mistune/directives/admonition.py concatenates the Admonition directive :class: option into the HTML class attribute without escaping, allowing attribute injection and cross-site scripting even when HTMLRenderer escape mode is enabled. This issue is fixed in version 3.2.1.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-g97x-gvcm-x72h", "https://github.com/lepture/mistune/commit/a3cb6e5655308797e8be021d6c7b5bab13cbace2", "https://github.com/lepture/mistune/releases/tag/v3.2.1"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59923", "noindex": false, "published": "2026-07-08T16:14:39.266Z", "modified": "2026-07-08T16:41:52.111Z", "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": 0.00348, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59923", "title": "Mistune: XSS via percent-encoded javascript URI bypass in safe_url()", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safe_url() does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. This issue is fixed in version 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-8c25-4j27-2rv3", "https://github.com/lepture/mistune/commit/c7101fcbb6e8790e8e39157c5ca2238fc6dd6cbc", "https://github.com/lepture/mistune/releases/tag/v3.3.0"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59930", "noindex": false, "published": "2026-07-08T16:13:21.999Z", "modified": "2026-07-09T13:54:33.627Z", "cvss": 4.3, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "severity": "medium", "epss": 0.00192, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59930", "title": "Mistune toc / TableOfContents directive: heading IDs use predictable `toc_N` numbering with no slugification, allowing collision with attacker-controlled `id=\"toc_N\"` content", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the toc plugin and TableOfContents directive generate heading IDs as predictable toc_N values without slugifying the heading text, allowing attacker-controlled id=\"toc_N\" content to collide with generated anchors and redirect same-page navigation, CSS selectors, or JavaScript handlers. This issue is fixed in version 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-2hm2-hc3v-44h9", "https://github.com/lepture/mistune/commit/c4093c4742ed0d10d9332fb8edb455869b7b581b", "https://github.com/lepture/mistune/releases/tag/v3.3.0"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-59922", "noindex": false, "published": "2026-07-08T16:12:00.545Z", "modified": "2026-07-09T14:40:22.315Z", "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": 0.00644, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-59922", "title": "Mistune plugins/formatting: quadratic-time parsing on long runs of `~~x~~`, `==x==`, and `^^x^^` markers (strikethrough / mark / insert)", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a run of closed tilde, equals-sign, or caret marker pairs around a character causes quadratic work in src/mistune/plugins/formatting.py when the strikethrough, mark, or insert plugin scans for matching markers from each possible start position, allowing denial of service through CPU exhaustion. This issue is fixed in version 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-c8j7-8cv4-2xmq", "https://github.com/lepture/mistune/commit/96d0f57f8fe9eeb06bb4cff521962a27d7c402e7", "https://github.com/lepture/mistune/releases/tag/v3.3.0"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}, {"id": "CVE-2026-49851", "noindex": false, "published": "2026-06-24T17:05:33.602Z", "modified": "2026-08-28T12:04:23.106Z", "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": 0.0063, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-49851", "title": "Mistune: Potential DoS via quadratic-time parsing in parse_link_text", "description": "Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear (approximately O(n²)) behavior in parse_link_text. When parsing Markdown containing many consecutive [ characters, parse_link_text repeatedly scans the input using a regex search inside a loop. Each iteration re-scans a large portion of the remaining string, resulting in quadratic-time behavior. An attacker-controlled Markdown input can therefore trigger excessive CPU usage with a very small payload. This vulnerability is fixed in 3.3.0.", "references": ["https://github.com/lepture/mistune/security/advisories/GHSA-qcq2-496w-v96p", "https://access.redhat.com/security/cve/CVE-2026-49851", "https://bugzilla.redhat.com/show_bug.cgi?id=2492304"], "fixes": [], "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}]}], "total": 29, "unknown_count": 0, "release_unconfirmed": false, "page": 1, "pages": 2, "filtered": false, "noindex": false, "filters": {}, "page_size": 20, "products": [{"name": "mistune", "path": "vulns/debian-13/mistune", "ecosystem": "Debian:13"}], "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": 9, "kev": 0}, "lastmod": "2026-10-23T21:07:57.729Z", "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. 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