{"id":"CVE-2026-115353","title":"Mistune before 3.3.0 Path Traversal via include Directive","summary":"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 …","severity":"high","cvss":8.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","cvssSource":"cna","cwe":["CWE-22"],"vendor":"lepture","product":"mistune","affected":["mistune < 3.3.0"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T19:13:30.422Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-115353","references":[{"url":"https://github.com/lepture/mistune/security/advisories/GHSA-9jjx-3hq3-hx4j","label":"GitHub Security Advisory (GHSA-9jjx-3hq3-hx4j)"},{"url":"https://www.vulncheck.com/advisories/mistune-before-3.3.0-path-traversal-via-include-directive","label":"VulnCheck Advisory: Mistune before 3.3.0 Path Traversal via include Directive"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T22:00:50.397Z","slug":"CVE-2026-115353","body":"## Overview\n\nMistune 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.\n\n## Affected\n\n- `mistune < 3.3.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}