Resource exhaustion in Nschloe Meshio
CVE-2026-118589
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.
Vulnerability class: DoS (Denial of Service)
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Nschloe Meshio — versions 5.3.0, 5.3.1, 5.3.2
Weakness classification (CWE)
References
- vuldb.com/vuln/428027 (technical-description, vdb-entry)
- vuldb.com/vuln/428027/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-118589 (third-party-advisory)
- vuldb.com/submit/1026207 (third-party-advisory)
- github.com/nschloe/meshio/issues/1576 (issue-tracking)
- github.com/nschloe/meshio/ (product)
Frequently asked questions
- What is CVE-2026-118589?
- CVE-2026-118589 is a medium-severity vulnerability in Nschloe Meshio, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-10-29.
- How severe is CVE-2026-118589?
- Medium severity. CVSS v3 base score is 5.3 out of 10.