Out-of-bounds Read in Python Pillow
CVE-2026-59198
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 generate…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L.
Affected products
- Python Pillow
- Python-pillow Pillow — versions >= 5.2.0, < 12.3.0
Weakness classification (CWE)
References
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-59198?
- CVE-2026-59198 is a medium-severity vulnerability in Python Pillow, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-07-14.
- How severe is CVE-2026-59198?
- Medium severity. CVSS v3 base score is 6.5 out of 10.