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CWE

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CVE-2026-42146

Published: May 4, 2026

Modified: May 6, 2026

PUBLISHED

CVSS v3.1

5.5

MEDIUM

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.

Vendor	Product	Versions
GreycLab	CImg	affected `< c3aacf5b96ac1e54b7af1957c6737dbf3949f6d3`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

https://github.com/GreycLab/CImg/security/advisories/GHSA-g54r-qmgx-c6fv

x_refsource_CONFIRM

https://github.com/GreycLab/CImg/issues/477

x_refsource_MISC

https://github.com/GreycLab/CImg/commit/c3aacf5b96ac1e54b7af1957c6737dbf3949f6d3

x_refsource_MISC

https://github.com/GreycLab/CImg/releases/tag/v.3.7.5

x_refsource_MISC

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