Medium severity · published Oct 8, 2026
CVE-2026-107695
FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Referencing Playlist
6.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FF
FFmpeg · FFmpeg
before 8.1.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107695
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107695
patch
https://github.com/FFmpeg/FFmpeg/commit/c364ab176f722bdabc886845e770c9eacbc1e3e5
patch
https://github.com/FFmpeg/FFmpeg/commit/0e6eef35517a
patch
https://github.com/FFmpeg/FFmpeg/commit/a4ddaba8bb78
patch
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23618
technical-description
https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L866
exploit
https://gist.github.com/OxBat/59574a2940092cda1b6e76bbf96f53d0
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