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CVE-2026-107695— FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Referencing 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.

FFmpeg 8.1.3 之前的版本中存在 HLS（HTTP Live Streaming）解复用器无限循环漏洞，远程攻击者可利用此漏洞导致拒绝服务。该漏洞的原因是 parse_playlist() 函数在媒体播放列表（Media Playlist）中接受了主播放列表（Master Playlist）标签。攻击者可通过诱导受害者打开一个精心构造的自引用播放列表，在 hls_read_header() 中无限添加变体（variants），从而导致 CPU 和 I/O 资源的无界消耗。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
FFmpeg FFmpeg < 8.1.3 affected
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I. Basic Information for CVE-2026-107695

Vulnerability Information
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Vulnerability Title
FFmpeg before 8.1.3 HLS Demuxer Infinite Loop via Self-Referencing Playlist
Source: CVE Program / CVE List V5
Vulnerability Description
FFmpeg before 8.1.3 contains an infinite loop vulnerability in the HLS demuxer that allows remote attackers to cause denial of service because parse_playlist() accepts Master Playlist tags inside Media Playlists. Attackers can trick victims into opening a crafted self-referencing playlist that endlessly adds variants in hls_read_header(), causing unbounded CPU and I/O consumption.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
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-2026-107695

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III. Intelligence Information for CVE-2026-107695

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Other References for CVE-2026-107695 (7)

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

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-2026-107697 4.3 MEDIUM FFmpeg before 8.1.3 HLS Demuxer Security Check Bypass via parse_playlist()
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-835

V. Comments for CVE-2026-107695

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