MEDIUM 5.7 NVD
CVE-2026-107678
FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in av_encryption_init_info_free() in libavutil/encryption_info.c, which recursively frees AVEncry
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.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24593
- https://ffmpeg.org/
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/mov.c#L8070
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/encryption_info.c#L219-L231
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-stack-exhaustion-via-recursive-f
This medium severity vulnerability with a CVSS score of 5.7 was published on 2026-10-08 via NVD.
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