medium6.5
CVE-2026-59198
Pillow TGA RLE encoder can serialize up to ~57 KB of adjacent heap data into generated images
Impact
Pillow is a Python imaging library. From 5.2.0 until 12.3.0, Pillow's TGA RLE encoder reads past its packed row buffer when saving a mode 1 image with TGA RLE compression, allowing adjacent process heap bytes to be copied into the generated TGA file. This issue is fixed in version 12.3.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | Pillow | >= 5.2.0, < 12.3.0 | 12.3.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Python | Pillow | from 5.2.0 before 12.3.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-fj7v-r99m-22gq
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-fj7v-r99m-22gq
- https://nvd.nist.gov/vuln/detail/CVE-2026-59198
- https://github.com/python-pillow/Pillow/pull/9709
- https://github.com/python-pillow/Pillow/commit/eada3cbd7fb9963ee90673fb7b5270124a0d5f4b
- https://github.com/python-pillow/Pillow/releases/tag/12.3.0