Pillow TGA RLE encoder can serialize up to ~57 KB of adjacent heap data into generated images
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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-59198US | high7.5 | — | ||
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… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/python-pillow/Pillow/commit/eada3cbd7fb9963ee90673fb7b5270124a0d5f4bFIX
- https://github.com/python-pillow/Pillow/pull/9709FIX
- https://github.com/python-pillow/Pillow/releases/tag/12.3.0ARTICLE
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-fj7v-r99m-22gqADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2026-59198WEB
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