{"action":"Upgrade librewolf to 77.0-r0 or later.","affected":[{"fixed":"77.0-r0","introduced":"0"}],"component":"librewolf","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.21","exploited":false,"fixed_versions":["77.0-r0"],"id":"tcs_01M6GKN8BQFMDXYRC6V4998KWD","modified_at":"2026-11-03T06:32:23.411327361Z","published_at":"2020-07-09T15:15:11.240Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2020-12409","https://security.alpinelinux.org/vuln/CVE-2020-12409"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2020-12409#Alpine:v3.21/librewolf","url":"https://osv.dev/vulnerability/ALPINE-CVE-2020-12409"}],"summary":"When using certain blank characters in a URL, they where incorrectly rendered as spaces instead of an encoded URL. This vulnerability affects Firefox < 77."}