CVE-2026-18309: GIMP APNG File Parsing Integer Overflow Remote Code Execution Vulnerability
GIMP APNG 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 APNG files. 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. Was ZDI-CAN-29401.
Affected Software
Event History
Frequently Asked Questions
Who is most exposed to exploitation?
Users of affected GIMP installations are exposed when they open a malicious APNG file or visit a malicious page that causes the file to be processed. The issue is triggered during APNG parsing.
What access does an attacker gain if exploitation succeeds?
An attacker can execute arbitrary code in the context of the current GIMP process. The provided information does not indicate that exploitation grants privileges beyond those of that process.