GIMP XPM File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of XPM files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28901.
https://www.zerodayinitiative.com/advisories/ZDI-26-221/
https://gitlab.gnome.org/GNOME/gimp/-/commit/2e7ed91793792d9e980b2df4c829e9aa60459253
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4154.json
https://bugzilla.redhat.com/show_bug.cgi?id=2457530
https://access.redhat.com/security/cve/CVE-2026-4154
https://access.redhat.com/errata/RHSA-2026:26168
https://access.redhat.com/errata/RHSA-2026:25907
https://access.redhat.com/errata/RHSA-2026:25901
https://access.redhat.com/errata/RHSA-2026:25899
https://access.redhat.com/errata/RHSA-2026:20691
https://access.redhat.com/errata/RHSA-2026:20554
https://access.redhat.com/errata/RHSA-2026:20553
https://access.redhat.com/errata/RHSA-2026:20552
https://access.redhat.com/errata/RHSA-2026:19362