CVE-2026-66759 — Gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted icns images
A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if…
Published: 2026-07-27 · CVSS: 7.1 · CVSS 3.1
A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values, or a crash leading to a denial of service if unmapped memory is accessed.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7