{"action":"Upgrade librewolf to 87.0-r0 or later.","affected":[{"fixed":"87.0-r0","introduced":"0"}],"component":"librewolf","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.22","exploited":false,"fixed_versions":["87.0-r0"],"id":"tcs_01M6GV1TMD8JAXQBFVRQRPGNQZ","modified_at":"2026-11-03T06:32:38.367770380Z","published_at":"2021-02-26T02:15:13.320Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-23974","https://security.alpinelinux.org/vuln/CVE-2021-23974"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-23974#Alpine:v3.22/librewolf","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-23974"}],"summary":"The DOMParser API did not properly process '<noscript>' elements for escaping. This could be used as an mXSS vector to bypass an HTML Sanitizer. This vulnerability affects Firefox < 86."}