Protection bypass in FFmpeg HLS demuxer exposes restricted resources
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-693.
Summary
FFmpeg before 8.1.3 has a protection mechanism failure in its HLS demuxer (CWE-693). A remote attacker who supplies a crafted master playlist can make parse_playlist() open child playlists that use disallowed protocols or local files that are not multimedia, bypassing the protocol and allowed_extensions restrictions.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade FFmpeg to version 8.1.3. Red Hat lists Red Hat Enterprise Linux AI (RHEL AI) 3 and Red Hat OpenShift AI (RHOAI) as affected, with plan none available.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA FFmpeg (FFmpeg) Fixed in 8.1.3
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
FFmpeg 8.1.3
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-69652 Infinite loop in FFmpeg HLS demuxer enables denial of servicePriority MEDIUM 64
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-08 Threatist record created from CVE-2026-107697
- 2026-10-09 Alias added: GHSA-hhvh-2vr7-77mx
- 2026-10-09 Affected versions changed · Red Hat
- 2026-10-09 CVSS score added · Red Hat
- 2026-10-15 CISA SSVC decision points changed
References
More Ffmpeg vulnerabilities
- TI-2025-19015 FFmpeg git-master before commit d5873b was discovered to contain a memory leak in the component libavutil/iamf.c. CVSS 3.1HIGH 8.8
- TI-2024-21238 FFmpeg 7.0 contains a heap-buffer-overflow at libavfilter/vf_tiltandshift.c:189:5 in copy_column. CVSS 3.1HIGH 8.4
- TI-2023-06050 Ffmpeg: null pointer dereference in ffmpeg hls parsing CVSS 3.1HIGH 7.5
- TI-2023-28420 Buffer Overflow vulnerability in Ffmpeg v.N113007-g8d24a28d06 allows a local attacker to… CVSS 3.1HIGH 8.0
- TI-2023-27357 FFmpeg v.n6.1-3-g466799d4f5 allows a heap-based buffer overflow via the… CVSS 3.1HIGH 8.0
- TI-2023-27044 Buffer Overflow vulnerability in FFmpeg version n6.1-3-g466799d4f5, allows a local… CVSS 3.1HIGH 8.0
Sources
- CVE-2026-107697 · CVE Program
- CVE-2026-107697 · NVD
- FIRST EPSS
- GHSA-hhvh-2vr7-77mx · GitHub Advisory Database · CC BY 4.0
- CVE-2026-107697 · Red Hat security data · CC BY 4.0
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