Bug 2548121 (CVE-2026-107697)

Summary: CVE-2026-107697 ffmpeg: ffmpeg: Security restriction bypass via crafted HLS master playlist
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in FFmpeg's HTTP Live Streaming (HLS) demuxer. A remote attacker can exploit this issue by supplying a specially crafted master playlist that references disallowed protocols or local files. This bypasses security restrictions and causes the application to open restricted resources, potentially resulting in unauthorized information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2549585, 2549586, 2549587, 2549588, 2549590, 2549591    
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Description OSIDB Bzimport 2026-10-08 17:51:48 UTC
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.