CVE-2026-107697
FFmpeg before 8.1.3 contains a protection mechanism failure in the HLS demuxer that allows attackers to bypass protocol and allowed_extensions restrictions when opening child playlists. Attackers can supply a crafted master playlist whose child playlists use disallowed protocols or non-multimedia local files, making parse_playlist() open resources the HLS security policy should block.
- Score
- CVSS 4.0 5.3 Medium
- Status
- Analyzed - disclosure@vulncheck.com
- Published
- 2026-10-08
- Last modified
- 2026-10-15
- Weaknesses
- CWE-693
Affected products
References
- https://github.com/FFmpeg/FFmpeg/commit/23602df9cd1b485c45ba6f533d3b85569de3f323
- https://github.com/FFmpeg/FFmpeg/commit/01044d04536e
- https://github.com/FFmpeg/FFmpeg/commit/191715f0232c
- https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L834
- https://github.com/FFmpeg/FFmpeg
- https://www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-security-check-bypass-via-parse-playlist
