8.2
High
CVE-2026-59197 Pillow is a Python imaging library
Description
Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Pillow 12.3 | earliest → < 12.3.0 | 12.3.0 |
References
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
Other CVEs of Pillow
The 60 CVEs of Pillow →
CVE-2026-112902
Pillow: Memory disclosure and segfault in libtiff encoder via crafted TIFF tags
8.3
High
CVE-2026-112899
Pillow: EPS load(scale) lets Ghostscript render past the decompression bomb limit
6.3
Medium
CVE-2026-114501
Pillow is a Python imaging library
6.3
Medium
CVE-2026-96639
Pillow is a Python imaging library
9.8
Critical