{"id":"CVE-2026-107678","published":"2026-10-08T16:17:05.747","lastModified":"2026-10-14T23:55:04.477","description":"FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in av_encryption_init_info_free() in libavutil/encryption_info.c, which recursively frees AVEncryptionInitInfo linked lists built by the MOV demuxer's mov_read_pssh(). Attackers can supply a crafted MP4 file with tens of thousands of small pssh boxes to exhaust the stack and crash the process, while also causing quadratic CPU consumption.","cvssScore":4.7,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-674"],"vendors":["ffmpeg"],"products":["ffmpeg"],"references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24593","tags":["Issue Tracking","Patch"]},{"url":"https://ffmpeg.org/","tags":["Product"]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/mov.c#L8070","tags":["Product"]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/encryption_info.c#L219-L231","tags":["Product"]},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-stack-exhaustion-via-recursive-free-of-pssh-boxes","tags":["Third Party Advisory"]}],"exploitRefs":[{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/mov.c#L8070","tags":["Product"]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/encryption_info.c#L219-L231","tags":["Product"]}],"hasPoc":true,"ai":null}