{"id":"CVE-2026-115350","aliases":[],"cve":{"records":[{"id":"CVE-2026-115350","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-22T11:20:02.626Z","published":"2026-10-22T19:13:26.891Z","modified":"2026-10-29T02:24:58.381Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-22T19:13:26.891Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T02:24:58.381Z"}],"references":[{"url":"https://github.com/lepture/mistune/security/advisories/GHSA-96vr-jm8v-g22j","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/mistune-before-3.3.0-stored-xss-via-include-directive-html-files","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-79","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","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":"2026-10-29T02:24:48.848275Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Mistune before 3.3.0 Stored XSS via Include Directive HTML Files","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"Mistune before 3.3.0 contains a cross-site scripting vulnerability in the Include directive that emits included .html, .xhtml, or .htm file content as raw block_html tokens. Attackers who can plant an HTML file readable by the renderer can reference it via an include directive, combined with path traversal, to execute stored scripts when escape=False is set.","score":6.1,"severity":"medium","published":"2026-10-22T19:13:26.891Z","modified":"2026-10-29T02:24:58.381Z","withdrawn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-2026-115350"}],"remediation":[],"references":["https://github.com/lepture/mistune/security/advisories/GHSA-96vr-jm8v-g22j","https://www.vulncheck.com/advisories/mistune-before-3.3.0-stored-xss-via-include-directive-html-files"],"sources":[{"name":"CVE","id":"CVE-2026-115350","modified":"2026-10-29T02:24:58.381Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-115350"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":5.3},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1}],"sourceAffected":[],"observedAt":"2026-10-29T14:34:20.787Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T16:05:33.966Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-29T08:15:38.117Z","attemptedAt":"2026-10-29T08:15:38.117Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-29T08:15:38.065Z","attemptedAt":"2026-10-29T08:15:38.065Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-29T08:15:37.445Z","attemptedAt":"2026-10-29T08:15:37.445Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-29T08:15:37.387Z","attemptedAt":"2026-10-29T08:15:37.387Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-115350","url":"https://www.first.org/epss/","probability":0.00188,"percentile":0.08438,"date":"2026-10-28","checkedAt":"2026-10-29T08:15:37.387Z"},{"source":"ENISA EUVD","id":"EUVD-2026-108419","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-108419","modified":"Oct 29, 2026, 2:24:58 AM","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","checkedAt":"2026-10-29T08:15:37.445Z"},{"source":"GitHub Advisory Database","id":"GHSA-pw44-j765-r9gj","url":"https://github.com/advisories/GHSA-pw44-j765-r9gj","modified":"2026-10-22T21:32:43Z","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","checkedAt":"2026-10-29T08:15:38.065Z"},{"source":"NVD","id":"CVE-2026-115350","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115350","modified":"2026-10-29T04:18:26.387","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/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":"2026-10-29T08:15:38.117Z"},{"source":"NVD","id":"CVE-2026-115350","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115350","modified":"2026-10-29T04:18:26.387","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","checkedAt":"2026-10-29T08:15:38.117Z"}],"aiSummary":{"text":"Mistune before 3.3.0 has a cross-site scripting vulnerability via the Include directive, allowing attackers with access to plant an HTML file to execute stored scripts when escape=False is set. The vulnerability affects versions less than 3.3.0. Attackers need to be able to plant an HTML file readable by the renderer.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T08:41:03.704Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-115350"}]}}