CVE-2026-4150 GIMP CVE debrief

Who should care

This vulnerability affects users of GIMP, particularly those who open PSD files from untrusted sources. Organizations that use GIMP in their workflow, especially in creative or design departments, should prioritize patching this vulnerability to prevent potential code execution attacks. Additionally, security teams should monitor for potential exploitation attempts and update their threat detection rules accordingly.

Technical summary

The vulnerability exists within the parsing of PSD files in GIMP. 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. The vulnerability has a CVSS vector of CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating a high severity level.

Defensive priority

This vulnerability has a high defensive priority due to its potential for code execution and the wide usage of GIMP in various industries. Security teams should prioritize patching this vulnerability and monitoring for potential exploitation attempts.

Recommended defensive actions

• Apply the official patch released by GIMP to address the integer overflow vulnerability in PSD file parsing.
• Update GIMP to the latest version to ensure the patched functionality is in place.
• Implement additional security measures, such as validating user-supplied data and monitoring for suspicious PSD file parsing activity.
• Conduct regular vulnerability assessments to identify potential weaknesses in the organization's GIMP installations.
• Educate users on the risks associated with opening PSD files from untrusted sources and the importance of keeping GIMP up-to-date.

Evidence notes

The CVE-2026-4150 vulnerability was publicly disclosed on April 11, 2026, and has since been modified on June 30, 2026. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. GIMP has released a patch to address this vulnerability, which is available on their official repository.

Official resources