{"id":"CVE-2026-119764","title":"Mythic 3.2.16 through 3.4.0.61 Stored XSS via Agent-Downloaded File Preview","summary":"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 …","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-79"],"vendor":"its-a-feature","product":"Mythic","affected":["Mythic >= 3.2.16 <= 3.4.0.61"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-11-05T02:26:48.229202Z"},"exploitAvailable":true,"published":"2026-10-30","updated":"2026-11-05","sourceUpdated":"2026-11-05T02:27:10.275Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119764","references":[{"url":"https://github.com/h00die/mythic_xss"},{"url":"https://github.com/its-a-feature/Mythic/commit/f06b3ed2d1de6577744cc0b3146966c625685859"},{"url":"https://github.com/its-a-feature/Mythic/blob/33a46d7db7e237458d7e20e7d3cfefef8112e590/MythicReactUI/src/components/pages/Callbacks/ResponseDisplayMedia.js#L335-L336"},{"url":"https://github.com/its-a-feature/Mythic"},{"url":"https://www.vulncheck.com/advisories/mythic-3.2.16-through-3.4.0.61-stored-xss-via-agent-downloaded-file-preview","label":"VulnCheck Advisory: Mythic 3.2.16 through 3.4.0.61 Stored XSS via Agent-Downloaded File Preview"}],"tags":["cve.org","exploit-available"],"epss":0.00317,"epssPercentile":0.2474,"ingestedAt":"2026-11-05T21:36:00.692Z","slug":"CVE-2026-119764","body":"## Overview\n\nMythic 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.\n\n## Affected\n\n- `Mythic >= 3.2.16 <= 3.4.0.61`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":37.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}