CVE-2026-118589

nschloe meshio VTK Reader _vtk_42.py memory allocation

State: Published
Severity: 6.9 Medium
Published: Oct 28, 2026
Updated: Oct 29, 2026
Reserved: Oct 28, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	5.3 Medium	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	VulDB
3.0	5.3 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:C	VulDB
2.0	5.0 Medium	AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:ND/RC:C	VulDB

Weaknesses

CWE-789 Uncontrolled Memory Allocation
CWE-400 Resource Consumption

Affected Products

Product	Versions
meshionschloe	5.3.0Affected 5.3.1Affected 5.3.2Affected 5.3.3Affected 5.3.4Affected 5.3.5Affected

References

VDB-428027 | nschloe meshio VTK Reader _vtk_42.py memory allocationvdb-entrytechnical-description
VDB-428027 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-118589 | CVE Analysis and Reportthird-party-advisory
Submit #1026207 | nschloe meshio 5.3.5 Uncontrolled Memory Allocationthird-party-advisory
https://github.com/nschloe/meshio/issues/1576issue-tracking
https://github.com/nschloe/meshio/product

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