CVE-2026-59198 | Pillow is a Python imaging library. From 5.2.0 until 12.3.0,… | CVSS 6.5 MEDIUM

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.

Metadata

CVE ID: CVE-2026-59198
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-02 19:53 UTC
Published: 2026-07-14 16:07 UTC
Last updated: 2026-07-14 19:55 UTC
Primary CWE: CWE-125
CWE-125: Out-of-bounds Read
Vendor / Product: python-pillow / Pillow
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
python-pillow	Pillow	—	>= 5.2.0, < 12.3.0

Weakness (CWE)

CWE	Source	Description
CWE-125	cna	CWE-125: Out-of-bounds Read

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L

References (4)

https://github.com/python-pillow/Pillow/security/advisories/GHSA-fj7v-r99m-22gq https://github.com/python-pillow/Pillow/security/advisories/GHSA-fj7v-r99m-22gq
https://github.com/python-pillow/Pillow/pull/9709 https://github.com/python-pillow/Pillow/pull/9709
https://github.com/python-pillow/Pillow/commit/eada3cbd7fb9963ee90673fb7b5270124a0d5f4b https://github.com/python-pillow/Pillow/commit/eada3cbd7fb9963ee90673fb7b5270124a0d5f4b
https://github.com/python-pillow/Pillow/releases/tag/12.3.0 https://github.com/python-pillow/Pillow/releases/tag/12.3.0