CVE-2026-118589 nschloe meshio VTK Reader _vtk_42.py memory allocation
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-118589?
CVE-2026-118589 is a medium-severity vulnerability in nschloe meshio, published on 28 Oct 2026.
Official description
A weakness has been identified in nschloe meshio up to 5.3.5. Impacted is an unknown function of the file meshio/_vtk_42.py of the component VTK Reader. Executing a manipulation of the argument DIMENSIONS can lead to uncontrolled memory allocation. The attack can be executed remotely. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-118589?
How do I fix CVE-2026-118589?
No fix has been published for CVE-2026-118589 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-118589 being exploited?
There is no known exploitation of CVE-2026-118589 in the wild and no public exploit code.
Sources
Also known as GHSA-xw74-2wwc-m47q, UBUNTU-CVE-2026-118589.