{"kind": "product", "path": "vulns/ubuntu-25.10/python-tornado", "name": "python-tornado", "product": "python-tornado", "ecosystem": "Ubuntu:25.10", "items": [{"id": "CVE-2026-35536", "noindex": false, "published": "2026-04-03T02:25:57.427Z", "modified": "2026-04-03T13:12:16.105Z", "cvss": 7.2, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "severity": "high", "epss": 0.00242, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-35536", "title": "CVE-2026-35536", "description": "In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7", "https://github.com/tornadoweb/tornado/releases/tag/v6.5.5", "https://nvd.nist.gov/vuln/detail/CVE-2026-35536"], "fixes": ["6.4.2-3ubuntu0.3"], "products": [{"name": "python-tornado", "path": "vulns/ubuntu-25.10/python-tornado", "ecosystem": "Ubuntu:25.10"}]}, {"id": "CVE-2026-31958", "noindex": false, "published": "2026-03-11T19:27:23.380Z", "modified": "2026-04-01T14:32:33.146Z", "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": 0.00381, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-31958", "title": "Tornado has a DoS due to too many multipart parts", "description": "Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-qjxf-f2mg-c6mc", "https://lists.debian.org/debian-lts-announce/2026/04/msg00000.html", "https://nvd.nist.gov/vuln/detail/CVE-2026-31958"], "fixes": ["6.4.2-3ubuntu0.3"], "products": [{"name": "python-tornado", "path": "vulns/ubuntu-25.10/python-tornado", "ecosystem": "Ubuntu:25.10"}]}, {"id": "CVE-2025-67726", "noindex": false, "published": "2025-12-12T06:13:51.336Z", "modified": "2025-12-18T18:48:49.007Z", "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": 0.00535, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-67726", "title": "Tornado is Vulnerable to Quadratic DoS via Crafted Multipart Parameters", "description": "Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n²)) during parsing. Due to Tornado's single event loop architectu", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-jhmp-mqwm-3gq8", "https://github.com/tornadoweb/tornado/commit/771472cfdaeebc0d89a9cc46e249f8891a6b29cd", "https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"], "fixes": ["6.4.2-3ubuntu0.2"], "products": [{"name": "python-tornado", "path": "vulns/ubuntu-25.10/python-tornado", "ecosystem": "Ubuntu:25.10"}]}, {"id": "CVE-2025-67725", "noindex": false, "published": "2025-12-12T05:49:41.523Z", "modified": "2025-12-18T18:51:00.369Z", "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": 0.00559, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-67725", "title": "Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing", "description": "Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS).  Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-c98p-7wgm-6p64", "https://github.com/tornadoweb/tornado/commit/771472cfdaeebc0d89a9cc46e249f8891a6b29cd", "https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"], "fixes": ["6.4.2-3ubuntu0.2"], "products": [{"name": "python-tornado", "path": "vulns/ubuntu-25.10/python-tornado", "ecosystem": "Ubuntu:25.10"}]}, {"id": "CVE-2025-67724", "noindex": false, "published": "2025-12-12T05:36:59.992Z", "modified": "2025-12-18T18:53:38.061Z", "cvss": 5.4, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "severity": "medium", "epss": 0.0024, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-67724", "title": "Tornado vulnerable to Header Injection and XSS via reason argument", "description": "Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom \"reason\" phrases (the \"Not Found\" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-pr2v-jx2c-wg9f", "https://github.com/tornadoweb/tornado/commit/9c163aebeaad9e6e7d28bac1f33580eb00b0e421", "https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"], "fixes": ["6.4.2-3ubuntu0.2"], "products": [{"name": "python-tornado", "path": "vulns/ubuntu-25.10/python-tornado", "ecosystem": "Ubuntu:25.10"}]}, {"id": "CVE-2025-47287", "noindex": false, "published": "2025-05-15T21:17:55.188Z", "modified": "2025-05-29T06:04:05.899Z", "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": 0.00745, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-47287", "title": "Tornado vulnerable to excessive logging caused by malformed multipart form data", "description": "Tornado is a Python web framework and asynchronous networking library. When Tornado's ``multipart/form-data`` parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the logging subsystem is synchronous. All versions of Tornado prior to 6.5.0 are affected. The vulnerable parser is enabled by default. Upgrade to Tornado version 6.50 to receive a patch. As a workaround, risk can be mitigated by blocking `Content-Type: multipart/form-data` in a proxy.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-7cx3-6m66-7c5m", "https://github.com/tornadoweb/tornado/commit/b39b892bf78fe8fea01dd45199aa88307e7162f3", "https://lists.debian.org/debian-lts-announce/2025/05/msg00038.html"], "fixes": ["6.4.2-2"], "products": [{"name": "python-tornado", "path": "vulns/ubuntu-25.10/python-tornado", "ecosystem": "Ubuntu:25.10"}]}, {"id": "CVE-2024-52804", "noindex": false, "published": "2024-11-22T15:43:38.572Z", "modified": "2025-11-03T22:28:40.235Z", "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": 0.01044, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-52804", "title": "Tornado has HTTP cookie parsing DoS vulnerability", "description": "Tornado is a Python web framework and asynchronous networking library. The algorithm used for parsing HTTP cookies in Tornado versions prior to 6.4.2 sometimes has quadratic complexity, leading to excessive CPU consumption when parsing maliciously-crafted cookie headers. This parsing occurs in the event loop thread and may block the processing of other requests. Version 6.4.2 fixes the issue.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-8w49-h785-mj3c", "https://github.com/tornadoweb/tornado/commit/d5ba4a1695fbf7c6a3e54313262639b198291533", "https://github.com/advisories/GHSA-7pwv-g7hj-39pr"], "fixes": ["6.4.2-1"], "products": [{"name": "python-tornado", "path": "vulns/ubuntu-25.10/python-tornado", "ecosystem": "Ubuntu:25.10"}]}], "total": 7, "unknown_count": 0, "release_unconfirmed": false, "page": 1, "pages": 1, "filtered": false, "noindex": false, "filters": {}, "page_size": 20, "products": [{"name": "python-tornado", "path": "vulns/ubuntu-25.10/python-tornado", "ecosystem": "Ubuntu:25.10"}], "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": 0, "kev": 0}, "lastmod": "2026-04-03T13:12:16.105Z", "early_advisories": [], "license": "Puedes utilizar libremente la selección de PatchFirst y nuestras aportaciones (prioridades, alertas tempranas, textos, resúmenes y agregados) para tus propios fines, incluido el uso interno de tu empresa. 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Las noticias incluyen un enlace a la fuente original en cada entrada.", "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": "Las licencias de las bases originales varían; consulta el catálogo de fuentes."}, {"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": "Puntuaciones públicas gratuitas; se solicita atribución (FIRST EPSS, puntuaciones generadas por 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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