FFmpeg before 8.1.3 contains a protection mechanism failure in the HLS demuxer that allows attackers to bypass protocol and allowed_extensions… (CVE-2026-107697)
Description
FFmpeg versions before 8.1.3 have a protection mechanism failure in the HLS demuxer. This flaw allows attackers to bypass protocol and allowed_extensions restrictions when opening child playlists. By supplying a crafted master playlist with child playlists using disallowed protocols or non-multimedia local files, attackers can cause parse_playlist() to open resources that should be blocked by the HLS security policy. The vulnerability has a medium severity with a CVSS score of 4.3.
CVSS v3.1
Score 4.3medium
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in FFmpeg prior to version 8.1.3 involves a failure in the protection mechanisms of the HLS demuxer. Specifically, attackers can bypass protocol and allowed_extensions restrictions by crafting a master playlist whose child playlists reference disallowed protocols or non-multimedia local files. This causes the parse_playlist() function to open resources that the HLS security policy is designed to block, potentially leading to unintended resource access.
Potential Impact
The impact is limited to the ability of an attacker to bypass HLS demuxer security restrictions, potentially causing FFmpeg to open disallowed or local files. The CVSS score of 4.3 indicates a medium severity impact with limited confidentiality impact and no integrity or availability impact. There are no known exploits in the wild.
Mitigation Recommendations
A fix is available in FFmpeg version 8.1.3. Users should upgrade to version 8.1.3 or later to remediate this vulnerability. No other mitigation guidance is provided or necessary given the availability of an official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-hhvh-2vr7-77mx
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-107697"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6ac80f122cdf04f65639052e
Added to database: 10/08/2026, 21:45:54 UTC
Last enriched: 10/08/2026, 21:51:11 UTC
Last updated: 10/08/2026, 23:28:22 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.