CVE-2026-107697

Medium

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.

SeverityMedium

CVSS4.3

Exploit probability—

ProductFfmpeg

PublishedOct 8, 2026

First seenOct 8, 2026

Weakness typeCWE-693CWE-693

How to fix

Update

ffmpeg ffmpeg8.1.3 or later

Patches

github.com/FFmpeg/FFmpeg/commit/23602df9cd1b485c45ba6f533d3b85569de3f323
github.com/FFmpeg/FFmpeg/commit/01044d04536e
github.com/FFmpeg/FFmpeg/commit/191715f0232c

Affected products

Product	Affected versions	Fixed in
ffmpeg ffmpeg	v < 8.1.3	8.1.3

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.