CVE-2026-107697CWE-693

CVE-2026-107697

Medium · published October 8, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
24.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00324 · 24.2th percentile
Weakness
CWE-693 · Protection Mechanism Failure
Published
2026-10-08T22:17Z
Affected products (1)
ProductVersionsFixed in
ffmpeg/ffmpeg< 8.1.38.1.3
References (6)
https://github.com/FFmpeg/FFmpeg · [email protected]https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L834 · [email protected]https://github.com/FFmpeg/FFmpeg/commit/01044d04536e · [email protected]https://github.com/FFmpeg/FFmpeg/commit/191715f0232c · [email protected]https://github.com/FFmpeg/FFmpeg/commit/23602df9cd1b485c45ba6f533d3b85569de3f323 · [email protected]https://www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-security-check-bypass-via-parse-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 Security Check Bypass via parse_playlist()
    cvelistv5
  • 08 OCT 17:30Z
    FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via parse_playlist()
    cvelistv5