CVE-2025-69534

{"id": "CVE-2025-69534", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2026-03-05T15:16:11.243", "references": [{"url": "https://github.com/Python-Markdown/markdown", "tags": ["Product"], "source": "cve@mitre.org"}, {"url": "https://github.com/Python-Markdown/markdown/actions/runs/15736122892", "tags": ["Product"], "source": "cve@mitre.org"}, {"url": "https://github.com/Python-Markdown/markdown/issues/1534", "tags": ["Exploit", "Issue Tracking"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/06/4", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions."}, {"lang": "es", "value": "Python-Markdown versi\u00f3n 3.8 contiene una vulnerabilidad donde secuencias malformadas similares a HTML pueden hacer que html.parser.HTMLParser genere un AssertionError no manejado durante el an\u00e1lisis de Markdown. Debido a que Python-Markdown no captura esta excepci\u00f3n, cualquier aplicaci\u00f3n que procese Markdown controlado por el atacante puede fallar. Esto permite una denegaci\u00f3n de servicio remota y no autenticada en aplicaciones web, sistemas de documentaci\u00f3n, pipelines de CI/CD y cualquier servicio que renderice Markdown no confiable. El problema fue reconocido por el proveedor y corregido en la versi\u00f3n 3.8.1. Este problema causa una denegaci\u00f3n de servicio remota en cualquier aplicaci\u00f3n que analice Markdown no confiable, y puede llevar a la revelaci\u00f3n de informaci\u00f3n a trav\u00e9s de excepciones no capturadas."}], "lastModified": "2026-03-13T01:25:22.277", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:python-markdown:markdown:3.8:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "2F64C314-46AB-44B9-87F4-69C31A94FC8E"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}