What’s Vulnerable › Vulnerabilities

CVE-2026-25990: Pillow has an out-of-bounds write when loading PSD images

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-11 · updated 2026-09-10
• Weakness: CWE-787

Description

Pillow is a Python imaging library. From 10.3.0 to before 12.1.1, an out-of-bounds write may be triggered when loading a specially crafted PSD image. This vulnerability is fixed in 12.1.1.

Affected products

• python-pillow Pillow: from 10.3.0 before 12.1.1 — fixed in 12.1.1

How to fix

Upgrade to a fixed version: python-pillow Pillow 12.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/python-pillow/Pillow/commit/9000313cc5d4a31bdcdd6d7f0781101abab553aa
• https://github.com/python-pillow/Pillow/security/advisories/GHSA-cfh3-3jmp-rvhc
• http://www.openwall.com/lists/oss-security/2026/02/12/1
• https://access.redhat.com/errata/RHSA-2026:10184
• https://access.redhat.com/errata/RHSA-2026:14873
• https://access.redhat.com/errata/RHSA-2026:14874
• https://access.redhat.com/errata/RHSA-2026:16174
• https://access.redhat.com/errata/RHSA-2026:19712
• https://access.redhat.com/errata/RHSA-2026:28385
• https://access.redhat.com/errata/RHSA-2026:3461
• https://access.redhat.com/errata/RHSA-2026:3462
• https://access.redhat.com/errata/RHSA-2026:4128

Get alerted when CVE-2026-25990 or the next vulnerability affects your stack