{"id":"CVE-2026-119764","aliases":[],"cve":{"records":[{"id":"CVE-2026-119764","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-30T15:36:24.107Z","published":"2026-10-30T17:19:55.892Z","modified":"2026-10-30T17:19:55.892Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-30T17:19:55.892Z"}],"references":[{"url":"https://github.com/h00die/mythic_xss","tags":["third-party-advisory"],"source":"VulnCheck"},{"url":"https://github.com/its-a-feature/Mythic/commit/f06b3ed2d1de6577744cc0b3146966c625685859","tags":["patch"],"source":"VulnCheck"},{"url":"https://github.com/its-a-feature/Mythic/blob/33a46d7db7e237458d7e20e7d3cfefef8112e590/MythicReactUI/src/components/pages/Callbacks/ResponseDisplayMedia.js#L335-L336","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/its-a-feature/Mythic","tags":["product"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/mythic-3.2.16-through-3.4.0.61-stored-xss-via-agent-downloaded-file-preview","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:its-a-feature:mythic:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2.16","versionEndIncluding":"3.4.0.61"}]}]}]}],"prioritization":[]},"title":"Mythic 3.2.16 through 3.4.0.61 Stored XSS via Agent-Downloaded File Preview","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"Mythic 3.2.16 through 3.4.0.61 contains a stored cross-site scripting vulnerability that allows attackers controlling target endpoint files to run JavaScript in the Mythic UI origin by planting HTML in .pdf-named files. When an operator downloads the file and clicks Preview Media, content-sniffed HTML from /direct/view renders same-origin, stealing localStorage JWTs for full GraphQL and REST access.","score":7.4,"severity":"high","published":"2026-10-30T17:19:55.892Z","modified":"2026-10-30T17:19:55.892Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"its-a-feature","name":"Mythic","platforms":[],"versions":[{"version":"3.2.16","status":"affected","lessThanOrEqual":"3.4.0.61","versionType":"custom"}],"defaultStatus":"unaffected","packageURL":"pkg:github/its-a-feature/Mythic","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-119764"}],"remediation":[],"references":["https://github.com/h00die/mythic_xss","https://github.com/its-a-feature/Mythic/commit/f06b3ed2d1de6577744cc0b3146966c625685859","https://github.com/its-a-feature/Mythic/blob/33a46d7db7e237458d7e20e7d3cfefef8112e590/MythicReactUI/src/components/pages/Callbacks/ResponseDisplayMedia.js#L335-L336","https://github.com/its-a-feature/Mythic","https://www.vulncheck.com/advisories/mythic-3.2.16-through-3.4.0.61-stored-xss-via-agent-downloaded-file-preview"],"sources":[{"name":"CVE","id":"CVE-2026-119764","modified":"2026-10-30T17:19:55.892Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-119764"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.4},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","score":6.8}],"sourceAffected":[],"observedAt":"2026-10-30T18:29:02.854Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T00:50:33.640Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}