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CVE-2026-107677

FFmpeg through 9.0.2 DASH Demuxer Infinite Loop via Empty SegmentTemplate Media

Published: 10/8/2026 Last updated: 10/8/2026 Reserved: 10/8/2026

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.

CNA assigner: VulnCheck (83251b91-4cc7-4094-a5c7-464a1b83ea10) Requested by: n/a

Metrics

Version Score Severity Vector String
4.0 5.7 Medium 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
3.1 4.7 Medium CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Opam packages affected (3)

conf-ffmpeg ffmpeg opus

Products affected (0)

No product listed.

References (6)

Credits (1)