CVE-2026-78475 GNOME CVE debrief

Who should care

Users and administrators of GIMP, particularly those who process PIX image files from untrusted sources, should be aware of this vulnerability and take steps to mitigate it. This includes applying vendor patches or updates, restricting access to untrusted PIX image files, and monitoring system logs for signs of potential exploitation. Additionally, GIMP installations should be inventoried and tracked to ensure they are up-to-date and secure. Security teams and vulnerability management teams should also review the vulnerability and assess their organization's exposure to it. Operators of affected systems should prioritize patching and consider implementing compensating controls to minimize potential impact. Platform owners and security teams should review the vulnerability and assess their organization's exposure to it, prioritizing patching and considering compensating controls to minimize potential impact. Vulnerability management teams should track exceptions, retest remediated assets, and close the item only after evidence is documented. Security teams should also review compensating controls for exposed systems while remediation is scheduled and verified. Asset inventory and tracking are crucial to ensure GIMP installations are up-to-date and secure. Monitoring and detection capabilities should be reviewed to ensure they can identify potential exploitation attempts. Overall, a coordinated effort is required to address this vulnerability and minimize its impact. GIMP users, administrators, and security teams must work together to apply patches, implement compensating controls, and monitor for potential exploitation. By taking these steps, organizations can reduce the risk associated with this vulnerability and protect their systems from potential attacks. Security teams should also consider implementing rollback and change windows to ensure that patches are applied correctly and that systems are restored to a known good state in case of issues. Source tracking and monitoring should also be implemented to detect and respond to potential exploitation attempts. By prioritizing patching, implementing compensating controls, and monitoring for potential exploits, G

Technical summary

The file-pix plugin in GIMP is vulnerable to a stack-based buffer overflow when processing specially crafted PIX image files. This can lead to a denial of service and limited information disclosure. The vulnerability is caused by the plugin's allocation of a Variable-Length Array (VLA) on the stack without proper bounds checking, resulting in an unbounded stack allocation followed by a 21-byte stack over-read. To address this vulnerability, users and administrators of GIMP should apply vendor patches or updates as they become available and restrict access to untrusted PIX image files.

Defensive priority

Medium-priority defensive actions are required to address CVE-2026-78475, a medium-severity vulnerability in GIMP's file-pix plugin.

Recommended defensive actions

• Apply vendor patches or updates to GIMP as they become available.
• Restrict access to untrusted PIX image files.
• Monitor system logs for signs of potential exploitation.
• Consider implementing compensating controls, such as Web Application Firewalls.
• Inventory and track GIMP installations to ensure they are up-to-date.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected products. Vendor advisories and issue tracking links are also available. To verify and mitigate this vulnerability, defenders should review the official CVE Program record and NIST NVD detail page. They should also check for any vendor-provided patches or updates and assess their GIMP installations for potential exposure. Additionally, defenders may need to implement compensating controls, such as Web Application Firewalls, and monitor system logs for signs of potential exploitation. The vulnerability's impact is limited to denial of service and information disclosure, but it is still essential to address it promptly.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.