What is CVE-2026-42144?

CVE-2026-42144 is a medium-severity vulnerability in Greyclab Cimg, classified under Integer Overflow or Wraparound. CVSS score: 6.1/10. Published 2026-05-04.

How severe is CVE-2026-42144?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Integer overflow in Greyclab Cimg

CVE-2026-42144

CImg Library is a C++ library for image processing. Prior to commit 4ca26bc, there is an integer overflow vulnerability in the W*H*D size computation inside _load_pnm() that can bypass the memory allocation guard. A crafted PNM/PGM/PPM fil…

Vulnerability class: Integer Overflow

EPSS: 0.000 (5.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H.

Affected products

Greyclab Cimg — versions < 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

https://github.com/GreycLab/CImg/commit/4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d (x_refsource_MISC)
https://github.com/GreycLab/CImg/issues/478 (x_refsource_MISC)
https://github.com/GreycLab/CImg/releases/tag/v.3.7.5 (x_refsource_MISC)
https://github.com/GreycLab/CImg/security/advisories/GHSA-4663-63fm-44gc (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-42144?: CVE-2026-42144 is a medium-severity vulnerability in Greyclab Cimg, classified under Integer Overflow or Wraparound. CVSS score: 6.1/10. Published 2026-05-04.
How severe is CVE-2026-42144?: Medium severity. CVSS v3 base score is 6.1 out of 10.