Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.
References
| Link | Resource |
|---|---|
| https://github.com/python-pillow/Pillow/commit/cce3bdb867c77a3420261ed1bfdb6b0787ec8fc1 | Patch |
| https://github.com/python-pillow/Pillow/pull/9695 | Issue Tracking Patch |
| https://github.com/python-pillow/Pillow/releases/tag/12.3.0 | Release Notes |
| https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr | Exploit Vendor Advisory |
| https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr | Exploit Vendor Advisory |
Configurations
History
21 Jul 2026, 19:17
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr - Exploit, Vendor Advisory |
21 Jul 2026, 15:52
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:* | |
| First Time |
Python
Python pillow |
|
| References | () https://github.com/python-pillow/Pillow/commit/cce3bdb867c77a3420261ed1bfdb6b0787ec8fc1 - Patch | |
| References | () https://github.com/python-pillow/Pillow/pull/9695 - Issue Tracking, Patch | |
| References | () https://github.com/python-pillow/Pillow/releases/tag/12.3.0 - Release Notes | |
| References | () https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr - Exploit, Vendor Advisory |
14 Jul 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-14 17:17
Updated : 2026-07-21 19:17
NVD link : CVE-2026-59197
Mitre link : CVE-2026-59197
CVE.ORG link : CVE-2026-59197
JSON object : View
Products Affected
python
- pillow
