Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- 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
FAQ
What is CVE-2026-42146?
CVE-2026-42146 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 agai...
How severe is CVE-2026-42146?
CVE-2026-42146 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42146?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.