{"id":"CVE-2026-115355","aliases":[],"cve":{"records":[{"id":"CVE-2026-115355","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-22T11:20:02.627Z","published":"2026-10-22T19:13:31.904Z","modified":"2026-10-29T13:48:43.278Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-22T19:13:31.904Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T13:48:43.278Z"}],"references":[{"url":"https://github.com/lepture/mistune/security/advisories/GHSA-h7ww-273w-6cm8","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/mistune-before-3.3.0-path-traversal-and-xss-via-include-directive","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-22","description":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:mistune_project:mistune:*:*:*:*:*:*:*:*","versionEndExcluding":"3.3.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T13:46:05.214120Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Mistune before 3.3.0 Path Traversal and XSS via Include Directive","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"Mistune before 3.3.0 contains a path traversal vulnerability in the Include directive that allows attackers to read arbitrary files by supplying ../ sequences in include paths. Attackers can also inject HTML through unescaped error messages and included file contents to perform cross-site scripting even when escape=True is set.","score":8.7,"severity":"high","published":"2026-10-22T19:13:31.904Z","modified":"2026-10-29T13:48:43.278Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"lepture","name":"mistune","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"3.3.0","versionType":"semver"},{"version":"3.3.0","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:pypi/mistune","packageIdentity":{"ecosystem":"PyPI","name":"mistune"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-115355"}],"remediation":[],"references":["https://github.com/lepture/mistune/security/advisories/GHSA-h7ww-273w-6cm8","https://www.vulncheck.com/advisories/mistune-before-3.3.0-path-traversal-and-xss-via-include-directive"],"sources":[{"name":"CVE","id":"CVE-2026-115355","modified":"2026-10-29T13:48:43.278Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-115355"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.7},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-29T14:11:31.738Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T17:05:30.676Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-29T14:05:36.411Z","attemptedAt":"2026-10-29T14:05:36.411Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-29T14:05:35.337Z","attemptedAt":"2026-10-29T14:05:35.337Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-29T14:05:34.627Z","attemptedAt":"2026-10-29T14:05:34.627Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-29T14:05:35.073Z","attemptedAt":"2026-10-29T14:05:35.073Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-108425","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-108425","modified":"Oct 29, 2026, 1:48:43 PM","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","checkedAt":"2026-10-29T14:05:34.627Z"},{"source":"FIRST EPSS","id":"CVE-2026-115355","url":"https://www.first.org/epss/","probability":0.00461,"percentile":0.39832,"date":"2026-10-28","checkedAt":"2026-10-29T14:05:35.073Z"},{"source":"GitHub Advisory Database","id":"GHSA-h7ww-273w-6cm8","url":"https://github.com/advisories/GHSA-h7ww-273w-6cm8","modified":"2026-10-23T20:46:48Z","checkedAt":"2026-10-29T14:05:35.337Z"},{"source":"NVD","id":"CVE-2026-115355","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115355","modified":"2026-10-22T19:17:41.633","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-10-29T14:05:36.411Z"},{"source":"NVD","id":"CVE-2026-115355","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115355","modified":"2026-10-22T19:17:41.633","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-10-29T14:05:36.411Z"}],"aiSummary":{"text":"Mistune before 3.3.0 has a path traversal vulnerability in the Include directive, allowing attackers to read arbitrary files and inject HTML for cross-site scripting. Attackers need to supply ../ sequences in include paths. This affects versions less than 3.3.0.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:17:42.147Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-115355"}]}}