CVE-2026-59090 Gimp: gimp: arbitrary code execution in psd plugin due to unsigned underflow
An attacker can execute arbitrary code on a victim's system by tricking them into opening a specially crafted PSD file in GIMP.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-59090?
CVE-2026-59090 is a high-severity vulnerability in Gimp Gimp, published on 10 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-191
Which versions are affected by CVE-2026-59090?
It affects 2 products.
Products include Gimp Gimp, Redhat Enterprise Linux.
How do I fix CVE-2026-59090?
Apply the vendor's patch.
Is CVE-2026-59090 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59090 exists.
Other vulnerabilities in Gimp Gimp
Sources
Also known as CLSA-2026-1787330254, CLSA-2026-1787333229, DEBIAN-CVE-2026-59090, GHSA-gfh5-q868-q4pw, OESA-2026-3573, UBUNTU-CVE-2026-59090.