CVE-2026-107677CWE-835

CVE-2026-107677

Medium · published October 8, 2026

CVSS v3.1
4.7
EPSS
0%
Percentile
3.0
In the wild
Unconfirmed
What it is

FFmpeg through 9.0.2 contains a denial of service vulnerability in the DASH demuxer that allows attackers to trigger an infinite loop by supplying an empty SegmentTemplate media URL. Attackers can craft an .mpd manifest declaring SegmentTemplate media="" so get_current_fragment() calls av_strireplace() with an empty search string, consuming CPU indefinitely.

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
5.7 · CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00139 · 3.0th percentile
Weakness
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2026-10-08T20:17Z
Affected products (1)
ProductVersionsFixed in
ffmpeg/ffmpeg≤ 9.0.2—
References (6)
https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/ed27bfcbbbc0872c0195eaf4dd2c0c93b9f1778e · [email protected]https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24592 · [email protected]https://ffmpeg.org/ · [email protected]https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/dashdec.c#L1726 · [email protected]https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/avstring.c#L230-L238 · [email protected]https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-dash-demuxer-infinite-loop-via-empty-segmenttemplate-media · [email protected]
EPSS history
Timeline
  • 10 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 08 OCT 15:28Z
    FFmpeg through 9.0.2 DASH Demuxer Infinite Loop via Empty SegmentTemplate Media
    cvelistv5
  • 08 OCT 15:28Z
    FFmpeg through 9.0.2 DASH Demuxer Infinite Loop via Empty SegmentTemplate Media
    cvelistv5