PT-2026-140991
CVE-2026-125098
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Published
2026-11-09
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Updated
2026-11-09
Description by
CVSS 3.1
3.3
LowMetricsAV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
FFmpeg through 9.0.2 contains an information disclosure vulnerability in vp8 lossy decode alpha() in libavcodec/webp.c that leaves alpha plane memory uninitialized for short uncompressed ALPH chunks. Attackers can supply a crafted WebP image whose ALPH chunk is shorter than width * height to disclose stale pixel data from previously decoded frames.
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