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CVE-2026-107697— FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via parse_playlist()

Quick assessment

Affected
FFmpeg FFmpeg
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 FFmpeg 8.1.3 之前的版本中，HLS 解复用器存在一个保护机制失效的问题，允许攻击者在打开子播放列表时绕过协议和 allowed_extensions 限制。攻击者可以提供精心构造的主播放列表，其中子播放列表使用不允许的协议或非多媒体本地文件，从而使 parse_playlist() 打开本应被 HLS 安全策略阻止的资源。

CVSS 4.3 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
FFmpeg FFmpeg < 8.1.3 affected
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I. Basic Information for CVE-2026-107697

Vulnerability Information
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Vulnerability Title
FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via parse_playlist()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FFmpeg FFmpeg 0 ~ 8.1.3 -

II. Public POCs for CVE-2026-107697

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III. Intelligence Information for CVE-2026-107697

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Other References for CVE-2026-107697 (5)

Same Patch Batch · FFmpeg · 2026-10-08 · 9 CVEs total

CVE-2026-107695 6.5 MEDIUM FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Referencing Playlist
CVE-2026-107696 6.5 MEDIUM FFmpeg through 9.0.2 Infinite Loop via RTSP Redirect Handling in rtsp.c
CVE-2026-107675 5.9 MEDIUM FFmpeg through 9.0.2 Missing SSH Host Key Verification in sftp Protocol
CVE-2026-107698 5.4 MEDIUM FFmpeg before 7.1.4 and 8.0.2 SSRF via RTSP Redirect Handling
CVE-2026-107660 4.8 MEDIUM FFmpeg before 8.1.3 and 9.x before 9.0.2 mbedTLS Hostname Verification Bypass for IP Hosts
CVE-2026-107677 4.7 MEDIUM FFmpeg through 9.0.2 DASH Demuxer Infinite Loop via Empty SegmentTemplate Media
CVE-2026-107678 4.7 MEDIUM FFmpeg through 9.0.2 Stack Exhaustion via Recursive Free of pssh Boxes
CVE-2026-107676 3.3 LOW FFmpeg through 9.0.2 Uninitialized Memory Disclosure via HDR10+ Metadata Serializer

IV. Related Vulnerabilities

Same product: FFmpeg
Same vendor: FFmpeg
Same weakness: CWE-693

V. Comments for CVE-2026-107697

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