CVE-2026-90947: Gimp: gimp: out-of-bounds write in lighting effects plugin via crafted preset file

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-14 · updated 2026-10-19
Weakness: CWE-787

Description

A flaw was found in GIMP. When processing a specially crafted lighting preset file, the Lighting Effects filter does not properly validate the number of light sources. This can lead to an out-of-bounds write, corrupting memory. An attacker could exploit this by convincing a user to open a malicious preset file, potentially causing a crash or enabling arbitrary code execution.

Affected products

Red Hat Enterprise Linux 7: all versions
Red Hat Enterprise Linux 8: all versions — fixed in 8100020261015094823.4c9c024f
Red Hat Enterprise Linux 9: all versions — fixed in 2:3.0.4-4.el9_8.14

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 8 8100020261015094823.4c9c024f; Red Hat Enterprise Linux 9 2:3.0.4-4.el9_8.14. Check the vendor advisory for mitigations.

References

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