A flaw was found in GIMP's PSD file format plugin. This vulnerability, an unsigned integer underflow in the `block_rem` variable, occurs when a user opens a specially crafted `.psd` image file. The underflow leads to parser confusion, enabling an attacker to inject arbitrary data as layer resource blocks. This can ultimately result in arbitrary code execution, allowing the attacker to run malicious code on the victim's system.
CVE-2026-59090
CVSS base score
8.4 (v3.1)
Severity
HIGH
Attack vector
Network
Weakness
CWE-191
Last modified
November 4, 2026
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H
Affected products
gimp gimp
redhat enterprise linux
References
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com Vendor Advisory
- bugzilla.redhat.com Issue Tracking, Vendor Advisory
- gitlab.gnome.org Exploit, Mitigation, Vendor Advisory
- gitlab.gnome.org Exploit, Mitigation, Vendor Advisory