Infinite Loop Vulnerability in FFmpeg HLS Demuxer
CVE-2026-107695

7.1HIGH

Key Information:

Vendor

Ffmpeg

Status
Ffmpeg
Vendor
CVE Published:
8 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-107695?

FFmpeg versions prior to 8.1.3 contain a vulnerability in the HLS demuxer that can be exploited by remote attackers to create a denial of service condition. This occurs when the parse_playlist() function improperly handles Master Playlist tags embedded in Media Playlists. Attackers may deceive users into opening a specially crafted self-referencing playlist, which can repeatedly add variants in the hls_read_header() function. This results in unbounded CPU and I/O consumption, effectively exhausting system resources and causing service disruption.

Affected Version(s)

FFmpeg 0 < 8.1.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-107695 - Proof of Concept

References

https://github.com/FFmpeg/FFmpeg/commit/c364ab176f722bdab...
patch
https://github.com/FFmpeg/FFmpeg/commit/0e6eef35517a
patch
https://github.com/FFmpeg/FFmpeg/commit/a4ddaba8bb78
patch

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

BapToutatis
.