{"action":"Upgrade ffmpeg to 4.1.3-r0 or later.","affected":[{"fixed":"4.1.3-r0","introduced":"0"}],"component":"ffmpeg","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.24","exploited":false,"fixed_versions":["4.1.3-r0"],"id":"tcs_01M6GKFMC6N0EEKGJMPYJKM43D","modified_at":"2026-11-03T06:32:23.066689747Z","published_at":"2019-03-12T09:29:00.577Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2019-9721","https://security.alpinelinux.org/vuln/CVE-2019-9721"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2019-9721#Alpine:v3.24/ffmpeg","url":"https://osv.dev/vulnerability/ALPINE-CVE-2019-9721"}],"summary":"A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format, because handle_open_brace in libavcodec/htmlsubtitles.c h"}