CVE-2026-42146

CImg Library is a C++ library for image processing. Prior to commit c3aacf5, the nb_colors field read from the BMP file header is used directly to compute an allocation size without validating it against the remaining file size. A crafted BMP file with a large nb_colors value triggers an out-of-memory condition, crashing any application that uses CImg to load untrusted BMP files. This issue has been patched via commit c3aacf5.

• CWE-789

• https://github.com/GreycLab/CImg/commit/c3aacf5b96ac1e54b7af1957c6737dbf3949f6d3
• https://github.com/GreycLab/CImg/issues/477
• https://github.com/GreycLab/CImg/releases/tag/v.3.7.5
• https://github.com/GreycLab/CImg/security/advisories/GHSA-g54r-qmgx-c6fv
• https://github.com/GreycLab/CImg/issues/477

Published

May 4, 2026

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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