GIMP PSP File Parser heap-based overflow

Summaryinfo

A vulnerability classified as critical has been found in GIMP. Affected by this issue is some unknown functionality of the component PSP File Parser. The manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2026-4153. The attack can be initiated remotely. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in GIMP (version now known). This issue affects some unknown processing of the component PSP File Parser. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

GIMP PSP File Parsing Heap-based Buffer 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 PSP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28874.

The advisory is shared at zerodayinitiative.com. The identification of this vulnerability is CVE-2026-4153. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 304231 (openSUSE 16 Security Update : gimp (openSUSE-SU-2026:20428-1)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (304231), EUVD (EUVD-2026-21635) and CERT Bund (WID-SEC-2026-0802). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• Open Source GIMP

Productinfo

Type

• Image Processing Software

Name

• GIMP

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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