CVE-2026-59198

Pillow TGA RLE encoder can serialize up to ~57 KB of adjacent heap data into generated images

Published Jul 14, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-fj7v-r99m-22gq Pillow TGA RLE encoder can serialize up to ~57 KB of adjacent heap data into generated images
Ubuntu USN Ubuntu USN USN-8690-1 Pillow vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Python-pillow
Python-pillow pillow
Vendors & Products Python-pillow
Python-pillow pillow
Type Values Removed Values Added
Description 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.
Title Pillow TGA RLE encoder can serialize up to ~57 KB of adjacent heap data into generated images
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 14, 2026, 7:55 PM
Reserved
Jul 2, 2026, 7:53 PM
Status
Analyzed
Published
Jul 14, 2026, 4:17 PM
Modified
Oct 24, 2026, 9:10 PM
Severity
Moderate
Public date
Jul 14, 2026, 4:07 PM