{"id":"CVE-2026-115353","state":"PUBLISHED","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.","publishedAt":"2026-10-22T19:13:30.422Z","updatedAt":"2026-10-22T19:13:30.422Z","severity":{"score":9.2,"label":"Critical","version":"4.0","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","source":"VulnCheck"},"assigner":"VulnCheck","products":["lepture mistune"],"affected":[{"vendor":"lepture","product":"mistune","packageURL":"pkg:pypi/mistune","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.3.0","versionType":"semver"},{"version":"3.3.0","status":"unaffected","versionType":"semver"}]}],"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"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/115xxx/CVE-2026-115353.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-115353","state":"PUBLISHED","datePublished":"2026-10-22T19:13:30.422Z","dateUpdated":"2026-10-22T19:13:30.422Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-22T11:20:02.626Z"},"containers":{"cna":{"title":"Mistune before 3.3.0 Path Traversal via include Directive","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"lepture","product":"mistune","packageURL":"pkg:pypi/mistune","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.3.0","versionType":"semver"},{"version":"3.3.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/lepture/mistune/security/advisories/GHSA-9jjx-3hq3-hx4j","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-9jjx-3hq3-hx4j)"},{"url":"https://www.vulncheck.com/advisories/mistune-before-3.3.0-path-traversal-via-include-directive","name":"VulnCheck Advisory: Mistune before 3.3.0 Path Traversal via include Directive","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.2,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":8.6,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-22T19:13:30.422Z"},"datePublic":"2026-06-21T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:mistune_project:mistune:*:*:*:*:*:*:*:*","versionEndExcluding":"3.3.0"}]}]}],"credits":[{"lang":"en","value":"offset","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}