{"action":"Upgrade firefox-esr to 78.7.0-r0 or later.","affected":[{"fixed":"78.7.0-r0","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.18","exploited":false,"fixed_versions":["78.7.0-r0"],"id":"tcs_01M6GN8C3XTJMZP57ADWR8PX3M","modified_at":"2026-11-03T06:32:27.483099422Z","published_at":"2021-02-26T03:15:13.433Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-23953","https://security.alpinelinux.org/vuln/CVE-2021-23953"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-23953#Alpine:v3.18/firefox-esr","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-23953"}],"summary":"If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects F"}