{"affected":[{"defaultStatus":"unaffected","ecosystem":"pypi","packageName":"mistune","product":"mistune","source":"CNA: VulnCheck","vendor":"lepture","versions":[{"lessThan":"3.3.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"3.3.0","versionType":"semver"}]}],"cveId":"CVE-2026-115353","cwes":["CWE-22"],"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.","epss":{"date":"2026-11-04","percentile":0.33066,"score":0.00388},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/lepture/mistune/security/advisories/GHSA-9jjx-3hq3-hx4j"}],"kev":null,"metrics":[{"score":9.2,"severity":"critical","source":"CNA: VulnCheck","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","version":"4.0"},{"score":8.6,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}],"modifiedAt":1793824254606,"publishedAt":1792696410422,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/lepture/mistune/security/advisories/GHSA-9jjx-3hq3-hx4j"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/mistune-before-3.3.0-path-traversal-via-include-directive"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/lepture/mistune/security/advisories/GHSA-9jjx-3hq3-hx4j"}],"remediation":[],"revision":"04c0a8f1dcc7eb3f55389471c71779116fd92bf815e33711413cc2834efd3fba","sources":[{"modifiedAt":1793824254606,"name":"CNA: VulnCheck","retrievedAt":1793826603003,"url":"https://www.cve.org/CVERecord?id=CVE-2026-115353"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793826618219,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115353"}],"ssvc":{"assessedAt":1793824247569,"automatable":"yes","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Mistune before 3.3.0 Path Traversal via include Directive","updatedAt":1793826618219}