CVE-2026-42798 Integer overflow in little cms color engine
Medium 4.0
Published
Updated
Check this codebase for CVE-2026-42798 and fix it if it is affected.
What it is: CVE-2026-42798 is a medium-severity vulnerability in littlecms little cms color engine, published on 30 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-42798 in the wild and no public exploit code.
Affected product: littlecms little cms color engine. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-42798/ (Markdown: https://insights.sbomify.com/CVE-2026-42798/index.md)
An integer overflow in Little CMS allows attackers to cause denial of service or potentially execute code via crafted color profiles.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-42798?
CVE-2026-42798 is a medium-severity vulnerability in littlecms little cms color engine, published on 30 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Little CMS (lcms2) 2.16 through 2.18 before 2.19 has an integer overflow in ParseCube in cmscgats.c.
Weakness: CWE-190
Which versions are affected by CVE-2026-42798?
How do I fix CVE-2026-42798?
Upgrade to a fixed version.
Is CVE-2026-42798 being exploited?
There is no known exploitation of CVE-2026-42798 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-42798, DEBIAN-CVE-2026-42798, ECHO-f978-7a1e-3dd3, GHSA-4m94-357r-hwph, OESA-2026-2325, OESA-2026-2326 and 2 more.