CVE-2026-96636
Pillow is a Python imaging library.
- Severity: Medium
- CVSS 6.5
- EPSS 0.28%
- P4 · Track
Why P4: track.
Description
Pillow is a Python imaging library. Prior to 13.0.0, MpoImageFile.seek() and DcxImageFile.seek() reparse later MPO or DCX frames and replace self._size without rerunning Image._decompression_bomb_check(). A crafted multi-frame image can use a tiny first frame to pass Image.open() and then declare an over-limit later frame. Normal frame iteration through seek(), load(), or ImageSequence.Iterator can decode that frame and commit hundreds of megabytes or more, causing memory-exhaustion denial of service. This issue is fixed in version 13.0.0.
Affected products
- pip Pillow < 13.0.0; first patched: 13.0.0
Weakness
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- NVD record NVD
- CVE Program record CVE Program
- Reference NVD
- Reference NVD
- Reference NVD
- Reference NVD
- GitHub security advisory GitHub