{"affected":[{"affectedData":[{"defaultStatus":"unaffected","packageURL":"pkg:github/its-a-feature/Mythic","product":"Mythic","repo":"https://github.com/its-a-feature/Mythic","vendor":"its-a-feature","versions":[{"lessThanOrEqual":"3.4.0.61","status":"affected","version":"3.2.16","versionType":"custom"}]}],"source":"disclosure@vulncheck.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"id":"CVE-2026-119764","lastModified":"2026-11-05T03:17:20.610","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"exploitabilityScore":1.6,"impactScore":5.2,"source":"disclosure@vulncheck.com","type":"Secondary"}],"cvssMetricV40":[{"cvssData":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","availabilityRequirement":"NOT_DEFINED","baseScore":7.4,"baseSeverity":"HIGH","confidentialityRequirement":"NOT_DEFINED","exploitMaturity":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"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/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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"source":"disclosure@vulncheck.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-119764","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2026-11-05T02:26:48.229202Z","version":"2.0.3"}}]},"published":"2026-10-30T18:17:27.273","references":[{"source":"disclosure@vulncheck.com","url":"https://github.com/h00die/mythic_xss"},{"source":"disclosure@vulncheck.com","url":"https://github.com/its-a-feature/Mythic"},{"source":"disclosure@vulncheck.com","url":"https://github.com/its-a-feature/Mythic/blob/33a46d7db7e237458d7e20e7d3cfefef8112e590/MythicReactUI/src/components/pages/Callbacks/ResponseDisplayMedia.js#L335-L336"},{"source":"disclosure@vulncheck.com","url":"https://github.com/its-a-feature/Mythic/commit/f06b3ed2d1de6577744cc0b3146966c625685859"},{"source":"disclosure@vulncheck.com","url":"https://www.vulncheck.com/advisories/mythic-3.2.16-through-3.4.0.61-stored-xss-via-agent-downloaded-file-preview"},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","url":"https://github.com/h00die/mythic_xss"}],"sourceIdentifier":"disclosure@vulncheck.com","vulnStatus":"Awaiting Analysis","weaknesses":[{"description":[{"lang":"en","value":"CWE-79"}],"source":"disclosure@vulncheck.com","type":"Secondary"}]}