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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-04 18:16

Updated : 2026-06-17 10:47

NVD link : CVE-2026-42146

Mitre link : CVE-2026-42146

CVE.ORG link : CVE-2026-42146

JSON object : View

Products Affected

No product.

CWE

CWE-789

Memory Allocation with Excessive Size Value

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