CVE-2026-90949 Gimp: gimp: heap-based buffer overflow in psp loader due to selection-channel geometry mismatch
A heap-based buffer overflow in GIMP's PSP loader allows remote attackers to execute arbitrary code or cause a crash via a malicious file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-90949?
CVE-2026-90949 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 6, published on 14 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A flaw was found in GIMP's PSP (Paint Shop Pro) file loader. When processing a compressed selection channel, a heap-based buffer overflow can occur due to a mismatch between the allocated buffer size and the amount of data decompressed. A remote attacker could exploit this vulnerability by crafting a malicious PSP file. Opening this file in GIMP could lead to a crash or arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2026-90949?
How do I fix CVE-2026-90949?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-90949 being exploited?
There is no known exploitation of CVE-2026-90949 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-90949, GHSA-5w7m-4vvh-65j3, UBUNTU-CVE-2026-90949.