{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-118660","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-28T17:25:37.561Z","datePublished":"2026-10-28T20:23:10.122Z","dateUpdated":"2026-10-29T17:23:32.163Z"},"containers":{"cna":{"title":"Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML","problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/capricorn86/happy-dom/security/advisories/GHSA-c8p4-j97h-3vg8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/capricorn86/happy-dom/security/advisories/GHSA-c8p4-j97h-3vg8"},{"name":"https://github.com/capricorn86/happy-dom/pull/2502","tags":["x_refsource_MISC"],"url":"https://github.com/capricorn86/happy-dom/pull/2502"},{"name":"https://github.com/capricorn86/happy-dom/commit/0a99c7525a1d0043e3182843ae33466ab7b19e74","tags":["x_refsource_MISC"],"url":"https://github.com/capricorn86/happy-dom/commit/0a99c7525a1d0043e3182843ae33466ab7b19e74"},{"name":"https://github.com/capricorn86/happy-dom/releases/tag/v21.0.0","tags":["x_refsource_MISC"],"url":"https://github.com/capricorn86/happy-dom/releases/tag/v21.0.0"}],"affected":[{"vendor":"capricorn86","product":"happy-dom","versions":[{"version":"< 21.0.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-28T20:23:10.122Z"},"descriptions":[{"lang":"en","value":"Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.0, Happy DOM loads iframe src URLs and link rel=\"stylesheet\" href URLs by default while parsing untrusted HTML on the server because disableIframePageLoading and disableCSSFileLoading default to false. An attacker who controls parsed HTML can therefore cause server-side requests to arbitrary internal or cloud endpoints without an application opt-in and may expose confidential responses or credentials returned by those endpoints. This issue is fixed in version 21.0.0."}],"source":{"advisory":"GHSA-c8p4-j97h-3vg8","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-29T15:43:35.972529Z","id":"CVE-2026-118660","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-29T17:23:32.163Z"}}]}}