{"id":"GHSA-cj63-jhhr-wcxv","revision":null,"records":[{"revision":"0c500a2c9d1346b7b3a1e6a02496efa3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-65913","aliases":[],"title":"DOMPurify before 3.3.2 Prototype Pollution via USE_PROFILES","description":"DOMPurify before 3.3.2 contains a prototype pollution vulnerability in USE_PROFILES mode that allows attackers to bypass attribute filtering by polluting Array.prototype properties. Attackers can set Array.prototype properties like onclick to true, causing DOMPurify to accept event handlers as allowlisted attributes and resulting in DOM-based XSS when sanitized markup is rendered.","state":0,"publishedAt":"2026-07-23T13:16:24.097+00:00","modifiedAt":"2026-10-08T15:24:00.138+00:00","affected":[{"ecosystem":"Vendor product","name":"DOMPurify","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"cure53\",\n                    \"product\": \"DOMPurify\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"3.3.2\"\n                        },\n                        {\n                            \"version\": \"3.3.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:npm/dompurify\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","score":5.1,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/cure53/DOMPurify/security/advisories/GHSA-cj63-jhhr-wcxv","https://www.vulncheck.com/advisories/dompurify-before-prototype-pollution-via-use-profiles"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-65913","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-65913","identifiers":["CVE-2026-65913"]},"retained":false,"historicalAffected":[]},{"revision":"208c7ecec7124a97990d59b92363fd51","observedAt":"2026-10-25T15:18:51.467+00:00","statement":{"source":"nvd","id":"CVE-2026-65913","aliases":[],"title":"DOMPurify before 3.3.2 contains a prototype pollution vulnerability in USE_PROFILES mode that allows attackers to bypass attribute filtering by polluting Array.prototype properties. Attackers can set Array.prototype properties like onclick …","description":"DOMPurify before 3.3.2 contains a prototype pollution vulnerability in USE_PROFILES mode that allows attackers to bypass attribute filtering by polluting Array.prototype properties. Attackers can set Array.prototype properties like onclick to true, causing DOMPurify to accept event handlers as allowlisted attributes and resulting in DOM-based XSS when sanitized markup is rendered.","state":0,"publishedAt":"2026-07-23T14:18:06.573+00:00","modifiedAt":"2026-10-24T13:10:00.147+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/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","score":5.1,"severity":"MEDIUM"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/cure53/DOMPurify/security/advisories/GHSA-cj63-jhhr-wcxv","https://www.vulncheck.com/advisories/dompurify-before-prototype-pollution-via-use-profiles"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-65913","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-1321"],"productCriteria":["cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-07-23T14:18:06.573","lastModified":"2026-10-24T13:10:00.147"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-65913","identifiers":["CVE-2026-65913"]},"retained":false,"historicalAffected":[]},{"revision":"acb3323a0ac94ddb96ff283d910ff0ce","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-cj63-jhhr-wcxv","aliases":["CVE-2026-65913"],"title":"DOMPurify USE_PROFILES prototype pollution allows event handlers","description":"## Summary\nWhen `USE_PROFILES` is enabled, DOMPurify rebuilds `ALLOWED_ATTR` as a plain array before populating it with the requested allowlists. Because the sanitizer still looks up attributes via `ALLOWED_ATTR[lcName]`, any `Array.prototype` property that is polluted also counts as an allowlisted attribute. An attacker who can set `Array.prototype.onclick = true` (or a runtime already subject to prototype pollution) can thus force DOMPurify to keep event handlers such as `onclick` even when they are normally forbidden. The provided PoC sanitizes `<img onclick=...>` with `USE_PROFILES` and adds the sanitized output to the DOM; the polluted prototype allows the event handler to survive and execute, turning what should be a blocklist into a silent XSS vector.\n\n## Impact\nPrototype pollution makes DOMPurify accept dangerous event handler attributes, which bypasses the sanitizer and results in DOM-based XSS once the sanitized markup is rendered.\n\n## Credits\nIdentified by Cantina’s Apex (https://www.cantina.security).","state":0,"publishedAt":"2026-04-03T03:45:08+00:00","modifiedAt":"2026-09-10T03:50:43.8327235+00:00","affected":[{"ecosystem":"npm","name":"dompurify","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"3.3.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/cure53/DOMPurify/security/advisories/GHSA-cj63-jhhr-wcxv","https://github.com/cure53/DOMPurify","https://github.com/cure53/DOMPurify/releases/tag/3.3.2"],"sourceUrl":"https://github.com/advisories/GHSA-cj63-jhhr-wcxv","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-cj63-jhhr-wcxv","identifiers":["GHSA-cj63-jhhr-wcxv","CVE-2026-65913"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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