VDB
CVE-2026-96643
CVE-2026-96643
PUBLISHED
CVSS 7.1 HIGH
Reported by GitHub_M · Published October 21, 2026
Pillow is a Python imaging library. From 11.0.0 until 13.0.0, Exif.load() in src/PIL/Image.py repeatedly slices the remaining EXIF data while it begins with the six-byte Exif header. src/PIL/PngImagePlugin.py accepts an uncapped PNG eXIf chunk, so a file filled with repeated headers causes a new shrinking copy on every iteration and quadratic CPU work. The condition is reachable through Image.getexif(), Image._getexif(), and ImageOps.exif_transpose(), including common photo-upload rotation workflows. This issue is fixed in version 13.0.0.
Risk Scores
CVSS 4.0
7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| python-pillow | Pillow | >= 11.0.0, < 13.0.0 |
| chainguard | nemo-rl-cuda-13.0 | 0 |
| chainguard | nemo-gym | 0 |
| chainguard | py3-pytorch-cuda-13.0 | 0 |
| python-pillow | Pillow | >= 11.0.0, < 13.0.0 |
Timeline
- Oct 21, 2026 CVE Published
- Oct 22, 2026 EPSS Score
- Oct 22, 2026 Coalition ESS Score
- Oct 23, 2026 CVE Updated
- Oct 25, 2026 EPSS Score
References
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-g4qv-2jxx-769h x_refsource_CONFIRM
- https://github.com/python-pillow/Pillow/pull/10073 x_refsource_MISC
- https://github.com/python-pillow/Pillow/commit/806e38381c781f32bbd22f4cd026678acd40fd6c x_refsource_MISC
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0 x_refsource_MISC