Integer overflow in Littlecms Little Cms
CVE-2026-41254
Little CMS (lcms2) through 2.18 has an integer overflow in CubeSize in cmslut.c because the overflow check is performed after the multiplication.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (28.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/mm2/Little-CMS/commit/da6110b1d14abc394633a388209abd5ebedd7ab0 (Patch)
- github.com/mm2/Little-CMS/commit/e0641b1828d0a1af5ecb1b11fe22f24fceefd4bc (Patch)
- www.openwall.com/lists/oss-security/2026/04/17/16 (Mailing List, Third Party Advisory)
- github.com/mm2/Little-CMS/security/advisories/GHSA-4xp6-rcgg-m9qq (Broken Link)
- abhinavagarwal07.github.io/posts/lcms2-cubesize-overflow/ (Exploit, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-41254?
- CVE-2026-41254 is a medium-severity vulnerability in Littlecms Little Cms, classified under CWE-696. CVSS score: 4.0/10. Published 2026-04-18.
- How severe is CVE-2026-41254?
- Medium severity. CVSS v3 base score is 4.0 out of 10.