high7.5
CVE-2026-112397
Pillow: Out-of-bounds access in _imagingmorph on a zero-width image
Impact
Pillow is a Python imaging library. Prior to 13.0.0, Pillow's ImageMorph.MorphOp.apply() can access memory before a row buffer for a zero-width image. PPM and PGM input can create an image with width zero, and the native morphology routine indexes outrow[width - 1] without rejecting that geometry. An attacker can supply such an image to an application that applies a morphology operation. This can crash the process. This issue is fixed in version 13.0.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | Pillow | <= 12.3.0 | 13.0.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Python | Pillow | before 13.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-58r4-6rv3-gfh8
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8
- https://nvd.nist.gov/vuln/detail/CVE-2026-112397
- https://github.com/python-pillow/Pillow/commit/18f7c0dfee93063c51db6ed0ca8c4da2999dcb64
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0