CVE-2026-66759 – Gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted icns images

CVE ID :CVE-2026-66759

Published : 27. Juli 2026 19:17 | 38 Minuten ago

Description :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.

Severity: 7.1 | HIGH

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