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.
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25990.json
https://github.com/python-pillow/Pillow/security/advisories/GHSA-cfh3-3jmp-rvhc
https://github.com/python-pillow/Pillow/commit/9000313cc5d4a31bdcdd6d7f0781101abab553aa
https://bugzilla.redhat.com/show_bug.cgi?id=2439170
https://access.redhat.com/security/cve/CVE-2026-25990
https://access.redhat.com/errata/RHSA-2026:6568
https://access.redhat.com/errata/RHSA-2026:6567
https://access.redhat.com/errata/RHSA-2026:6497
https://access.redhat.com/errata/RHSA-2026:6309
https://access.redhat.com/errata/RHSA-2026:6308
https://access.redhat.com/errata/RHSA-2026:6278
https://access.redhat.com/errata/RHSA-2026:6277
https://access.redhat.com/errata/RHSA-2026:5665
https://access.redhat.com/errata/RHSA-2026:5168
https://access.redhat.com/errata/RHSA-2026:4942
https://access.redhat.com/errata/RHSA-2026:4128
https://access.redhat.com/errata/RHSA-2026:3462
https://access.redhat.com/errata/RHSA-2026:3461
https://access.redhat.com/errata/RHSA-2026:28385
https://access.redhat.com/errata/RHSA-2026:19712
https://access.redhat.com/errata/RHSA-2026:16174
https://access.redhat.com/errata/RHSA-2026:14874
https://access.redhat.com/errata/RHSA-2026:14873
Published: 2026-02-11
Updated: 2026-07-01
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
Severity: High
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
Base Score: 8.6
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00015