CVE-2026-107695
mediumpriority · track · 26EPSS 0.005 · 40 %ileDEUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-3820ffmpeg: Mehrere SchwachstellenDeutsch2026-10-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in ffmpeg ausnutzen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Daten zu manipulieren und um Sicherheitsvorkehrungen zu umgehen.
sources
Which sources assert this record, and when.
references (8) nvd
External citations — patches, advisories, analysis.
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23618Issue TrackingPatch
- https://gist.github.com/OxBat/59574a2940092cda1b6e76bbf96f53d0ExploitMitigationThird Party Advisory
- https://github.com/FFmpeg/FFmpegProduct
- https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L866Product
- https://github.com/FFmpeg/FFmpeg/commit/0e6eef35517aPatch
- https://github.com/FFmpeg/FFmpeg/commit/a4ddaba8bb78Patch
- https://github.com/FFmpeg/FFmpeg/commit/c364ab176f722bdabc886845e770c9eacbc1e3e5Patch
- https://www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-infinite-loop-via-self-referencing-playlistPatchThird Party Advisory
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