PyPI/pillow CVE-2026-59197: high 8.2, EPSS 0.45%

Pillow: Heap out-of-bounds write in `ImageFilter.RankFilter` via integer overflow in `ImagingExpand`

Action: Upgrade pillow to 12.3.0 or later.

pip install pillow==12.3.0

Affected

Fixed versions

Sources

• osv: GHSA-xj96-63gp-2gmr
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr
• https://nvd.nist.gov/vuln/detail/CVE-2026-59197
• https://github.com/python-pillow/Pillow/pull/9695
• https://github.com/python-pillow/Pillow/commit/cce3bdb867c77a3420261ed1bfdb6b0787ec8fc1
• https://github.com/python-pillow/Pillow
• https://github.com/python-pillow/Pillow/releases/tag/12.3.0

CVE-2026-59197 · published 2026-07-20T23:08:58Z · modified 2026-09-10T03:50:53.192759645Z · JSON