{"id":"GHSA-63q7-h895-m982","summary":"Cross-site Scripting in dompurify","details":"Cure53 DOMPurify before 2.0.17 allows mutation XSS. This occurs because a serialize-parse roundtrip does not necessarily return the original DOM tree, and a namespace can change from HTML to MathML, as demonstrated by nesting of FORM elements.","aliases":["CVE-2020-26870"],"modified":"2023-11-08T04:03:20.096890Z","published":"2020-12-18T22:51:40Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2020-12-18T22:51:27Z","nvd_published_at":"2020-10-07T16:15:00Z","cwe_ids":["CWE-79"],"severity":"MODERATE"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26870"},{"type":"WEB","url":"https://github.com/cure53/DOMPurify/commit/02724b8eb048dd219d6725b05c3000936f11d62d"},{"type":"PACKAGE","url":"https://github.com/cure53/DOMPurify"},{"type":"WEB","url":"https://github.com/cure53/DOMPurify/compare/2.0.16...2.0.17"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00029.html"},{"type":"WEB","url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-26870"},{"type":"WEB","url":"https://research.securitum.com/mutation-xss-via-mathml-mutation-dompurify-2-0-17-bypass"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-JS-DOMPURIFY-1016634"},{"type":"WEB","url":"https://www.oracle.com//security-alerts/cpujul2021.html"}],"affected":[{"package":{"name":"dompurify","ecosystem":"npm","purl":"pkg:npm/dompurify"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.0.17"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/12/GHSA-63q7-h895-m982/GHSA-63q7-h895-m982.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}