VDB
CVE-2026-96636
CVE-2026-96636
PUBLISHED
CVSS 6.5 MEDIUM
Reported by GitHub_M · Published October 21, 2026
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.
EPSS 0.35% · 28.4th percentile
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
0.35%
28.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| python-pillow | Pillow | < 13.0.0 |
| chainguard | nemo-gym | 0 |
| chainguard | superset-fips-6.1 | 0 |
| python-pillow | Pillow | < 13.0.0 |
| chainguard | py3-pytorch-cuda-13.0 | 0 |
| chainguard | nemo-rl-cuda-13.0 | 0 |
Timeline
- Oct 21, 2026 CVE Published
- Oct 22, 2026 EPSS Score
- Oct 22, 2026 Coalition ESS Score
- Oct 25, 2026 EPSS Score
References
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-p8hx-v2p6-rp84 x_refsource_CONFIRM
- https://github.com/python-pillow/Pillow/pull/10011 x_refsource_MISC
- https://github.com/python-pillow/Pillow/commit/f1acfc54c53502948d0d14121872061df931db48 x_refsource_MISC
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0 x_refsource_MISC