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Medium severity · published Oct 8, 2026
CVE-2026-107697
FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via parse_playlist()
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% 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
Affected product
FF
FFmpeg
FFmpeg
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107697
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107697
patch
https://github.com/FFmpeg/FFmpeg/commit/23602df9cd1b485c45ba6f533d3b85569de3f323
patch
https://github.com/FFmpeg/FFmpeg/commit/01044d04536e
patch
https://github.com/FFmpeg/FFmpeg/commit/191715f0232c
technical-description
https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L834
product
https://github.com/FFmpeg/FFmpeg
third-party-advisory
https://www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-security-check-bypass-via-parse-playlist
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