Bug 2520591 (CVE-2026-18306)

Summary: CVE-2026-18306 gimp: GIMP: Remote Code Execution via SGI File Parsing Integer Overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in GIMP. This vulnerability, an integer overflow within the parsing of SGI (Silicon Graphics Image) files, allows a remote attacker to execute arbitrary code. Exploitation requires user interaction, where the target must open a specially crafted malicious SGI file. Successful exploitation could lead to the attacker executing code in the context of the current user's process.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2521187    
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Description OSIDB Bzimport 2026-08-20 16:55:44 UTC 
GIMP SGI File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of SGI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29396.