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Vulnerability · Published Oct 28, 2026 · Assigned by VulDB

CVE-2026-118589nschloe meshio VTK Reader _vtk_42.py memory allocation

Medium 5.3

In plain English

A medium-severity uncontrolled resource consumption in meshio from nschloe. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.4%top 65.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:22.04:LTSpython-meshiono fix listedUBUNTU-CVE-2026-118589
Ubuntu:24.04:LTSpython-meshiono fix listedUBUNTU-CVE-2026-118589
Ubuntu:26.04:LTSpython-meshiono fix listedUBUNTU-CVE-2026-118589
Ubuntu:26.10python-meshiono fix listedUBUNTU-CVE-2026-118589

Affected products (as reported)

VendorProductVersions
nschloe meshio 5.3.05.3.15.3.25.3.35.3.45.3.5

Weakness: CWE-789, CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:C

References