CVE-2026-107695CWE-835

CVE-2026-107695

Medium · published October 8, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
38.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
7.1 · 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
EPSS
0.00457 · 38.7th percentile
Weakness
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2026-10-08T22:17Z
Affected products (1)
ProductVersionsFixed in
ffmpeg/ffmpeg< 8.1.38.1.3
References (8)
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23618 · [email protected]https://gist.github.com/OxBat/59574a2940092cda1b6e76bbf96f53d0 · [email protected]https://github.com/FFmpeg/FFmpeg · [email protected]https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L866 · [email protected]https://github.com/FFmpeg/FFmpeg/commit/0e6eef35517a · [email protected]https://github.com/FFmpeg/FFmpeg/commit/a4ddaba8bb78 · [email protected]https://github.com/FFmpeg/FFmpeg/commit/c364ab176f722bdabc886845e770c9eacbc1e3e5 · [email protected]https://www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-infinite-loop-via-self-referencing-playlist · [email protected]
EPSS history
Timeline
  • 10 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 08 OCT 17:30Z
    FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Referencing Playlist
    cvelistv5
  • 08 OCT 17:30Z
    FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Referencing Playlist
    cvelistv5