What is CVE-2026-107695?

CVE-2026-107695 is a medium-severity vulnerability in Ffmpeg, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2026-10-08.

How severe is CVE-2026-107695?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Ffmpeg

CVE-2026-107695

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.

Published 2026-10-08.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Ffmpeg

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

github.com/FFmpeg/FFmpeg/commit/c364ab176f722bdabc886845e770c9eacbc1e3e5 (patch)
github.com/FFmpeg/FFmpeg/commit/0e6eef35517a (patch)
github.com/FFmpeg/FFmpeg/commit/a4ddaba8bb78 (patch)
code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23618 (patch)
github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c (technical-description)
gist.github.com/OxBat/59574a2940092cda1b6e76bbf96f53d0 (exploit)
github.com/FFmpeg/FFmpeg (product)
www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-infinite-loop-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-107695?: CVE-2026-107695 is a medium-severity vulnerability in Ffmpeg, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2026-10-08.
How severe is CVE-2026-107695?: Medium severity. CVSS v3 base score is 6.5 out of 10.