high7.5
CVE-2026-112405
Pillow: NULL pointer dereference in Image.merge via an unvalidated band 0
Impact
Pillow is a Python imaging library. From 12.0.0 until 13.0.0, Pillow's Image.merge() can dereference a null image8 plane. Validation skips the first input band, allowing a 32-bit integer or floating-point image backed by image32 storage to be merged as a narrower multiband image. A crafted IPTC file can reach this path when an application opens and loads it, or a caller can invoke Image.merge() directly with such a first band. This causes a native process crash. This issue is fixed in version 13.0.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | pillow | >= 12.0.0, < 13.0.0 | 13.0.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Python | Pillow | from 12.0.0 before 13.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-cp9v-662q-vvx9
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-cp9v-662q-vvx9
- https://nvd.nist.gov/vuln/detail/CVE-2026-112405
- https://github.com/python-pillow/Pillow/commit/b6ee66e8b2c2c0932bdf65f963268d9f2927ef86
- https://github.com/python-pillow/Pillow/releases/tag/13.0.0