CVE-2026-59090
Received Received - Intake

Unsigned Integer Underflow in GIMP PSD Plugin

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: Red Hat, Inc.

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.

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Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-59090
EUVD
EUVD-2026-55616

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
gnome gimp *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-191 The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

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Executive Summary

CVE-2026-59090 is a flaw in GIMP's PSD file format plugin caused by an unsigned integer underflow in the block_rem variable. When a user opens a specially crafted PSD image file, this underflow leads to parser confusion, allowing an attacker to inject arbitrary data as layer resource blocks. This can result in arbitrary code execution on the victim's system.

Detection Guidance

This vulnerability is triggered by opening a specially crafted PSD file in GIMP. Detection involves monitoring for suspicious PSD files or unusual GIMP processes. Use tools like file integrity monitors or antivirus software to scan for malicious PSD files. No specific commands are provided in the context to directly detect this issue.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your system. Simply opening a specially crafted PSD file in GIMP could trigger the flaw, potentially leading to system compromise, data theft, or further malware installation without additional user interaction.

Mitigation Strategies
  • Avoid opening untrusted or suspicious PSD files in GIMP.
  • Only process PSD images from trusted sources.
  • Apply any available security updates or patches for GIMP as soon as they are released.
  • Use antivirus or endpoint protection software to scan files before opening them.

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