3.0.9
CVE-2026-4154 describes a Remote Code Execution (RCE) vulnerability affecting GIMP, a popular open-source image editor. This flaw stems from insufficient validation during XPM file parsing, potentially allowing an attacker to execute arbitrary code. The vulnerability impacts GIMP version 3.0.8–3.0.8 and requires user interaction, such as opening a malicious file or visiting a compromised webpage, to trigger exploitation. A patch is available to address this security issue.
Successful exploitation of CVE-2026-4154 could grant an attacker complete control over a vulnerable system. By crafting a malicious XPM file, an attacker could execute arbitrary commands with the privileges of the GIMP process. This could lead to data theft, system compromise, and potentially, lateral movement within a network if the GIMP process has elevated privileges. The requirement for user interaction means that social engineering tactics, such as tricking a user into opening a malicious file, are likely attack vectors. Given GIMP's widespread use, the potential blast radius is significant.
CVE-2026-4154 was publicly disclosed on 2026-04-11. Its severity is rated HIGH with a CVSS score of 7.8. Currently, there are no known active campaigns exploiting this vulnerability, and no public proof-of-concept (POC) exploits have been released. It is not currently listed on the CISA KEV catalog.
Exploit Status
EPSS
0.07% (21% percentile)
CISA SSVC
CVSS Vector
The primary mitigation for CVE-2026-4154 is to upgrade to a patched version of GIMP. Consult the GIMP project's website for the latest stable release. If immediate patching is not feasible, consider restricting user access to untrusted XPM files. While a WAF or proxy is unlikely to directly mitigate this vulnerability, implementing strict file type validation policies can help prevent malicious XPM files from reaching vulnerable systems. There are no specific Sigma or YARA rules readily available for this vulnerability at this time, but monitoring for unusual process execution related to GIMP is recommended.
Update GIMP to version 3.0.8 or later to mitigate the integer overflow vulnerability in XPM file parsing. This update corrects the validation of user-supplied data, preventing arbitrary code execution.
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CVE-2026-4154 is a Remote Code Execution vulnerability in GIMP versions 3.0.8–3.0.8. A flaw in XPM file parsing allows attackers to execute code via malicious files, requiring user interaction.
If you are using GIMP version 3.0.8–3.0.8, you are potentially affected. Upgrade to a patched version as soon as possible to mitigate the risk.
Upgrade to the latest patched version of GIMP available from the official GIMP project website. Check their advisories for specific version numbers.
As of now, there are no confirmed reports of active exploitation of CVE-2026-4154, but it's crucial to apply the patch proactively.
Refer to the GIMP project's website and security advisories for the latest information and patch releases related to CVE-2026-4154.
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