CVE-2026-107697

FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via parse_playlist()

MEDIUM
4.3
CVSS Score
Published: October 8, 2026 at 05:30 PM UTC
Updated: October 15, 2026 at 12:01 AM UTC
1 product affected across 1 vendorFFMPEG

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 8.1.3

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-693

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