{"id":"CVE-2020-6816","details":"In Mozilla Bleach before 3.12, a mutation XSS in bleach.clean when RCDATA and either svg or math tags are whitelisted and the keyword argument strip=False.","aliases":["GHSA-m6xf-fq7q-8743","PYSEC-2020-28"],"modified":"2026-07-22T09:44:35.574034342Z","published":"2020-03-24T22:15:12.657Z","related":["openSUSE-SU-2021:0552-1","openSUSE-SU-2021:0571-1","openSUSE-SU-2024:11219-1","openSUSE-SU-2024:14134-1","openSUSE-SU-2026:11323-1"],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"33"},{"last_affected":"33"}],"source":"CPE_STRING","vendor_product":"fedoraproject:fedora"}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EDQU2SZLZMSSACCBUBJ6NOSRNNBDYFW5/"},{"type":"ADVISORY","url":"https://github.com/mozilla/bleach/security/advisories/GHSA-m6xf-fq7q-8743"},{"type":"EVIDENCE","url":"https://advisory.checkmarx.net/advisory/CX-2020-4277"},{"type":"EVIDENCE","url":"https://www.checkmarx.com/blog/vulnerabilities-discovered-in-mozilla-bleach"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mozilla/bleach","events":[{"introduced":"0"},{"fixed":"78a06726dd6c72a42c90c1f7a8fa5d21ebcfa587"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:mozilla:bleach:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"3.1.2"}]}}],"versions":["v3.1.1","v3.1.0","v3.0.2","v3.0.1","v3.0.0","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.1","v2.0","v1.5","v1.4.2","v1.4.1","v1.4","v1.2.2","v1.2.1","v1.1.1","v1.1.0","v1.0.4","1.0.3","1.0.2","1.0.1","1.0.0","1.0.0rc2","0.5.0","1.0.0rc","0.4.0","0.3.5","0.3.4","0.3.3","0.3.2","0.3.1","0.3.0","0.2.2","0.2.1","0.2.0","0.1.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-6816.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}