CVE-2026-107695
FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Referencing Playlist
- State
- Published
- Severity
- 7.1 High
- Published
- Oct 8, 2026
- Updated
- Oct 14, 2026
- Reserved
- Oct 8, 2026
Description
FFmpeg before 8.1.3 contains an infinite loop vulnerability in the HLS demuxer that allows remote attackers to cause denial of service because parse_playlist() accepts Master Playlist tags inside Media Playlists. Attackers can trick victims into opening a crafted self-referencing playlist that endlessly adds variants in hls_read_header(), causing unbounded CPU and I/O consumption.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
Affected Products
| Product | Versions |
|---|---|
FFmpegFFmpeg |
|
References
- Patch Commitpatch
- Backport to release/9.0patch
- Backport to release/8.1patch
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23618patch
- https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L866technical-description
- https://gist.github.com/OxBat/59574a2940092cda1b6e76bbf96f53d0exploit
- https://github.com/FFmpeg/FFmpegproduct
- VulnCheck Advisory: FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Referencing Playlistthird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.