Medium severity · published Oct 28, 2026
CVE-2026-118589
nschloe meshio VTK Reader _vtk_42.py memory allocation
New
5.3
CVSS
–
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
meshio · nschloe
5.3.0; 5.3.1; 5.3.2; 5.3.3; 5.3.4; 5.3.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-118589
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-118589
vdb-entry
https://vuldb.com/vuln/428027
signature
https://vuldb.com/vuln/428027/cti
third-party-advisory
https://vuldb.com/cve/CVE-2026-118589
third-party-advisory
https://vuldb.com/submit/1026207
issue-tracking
https://github.com/nschloe/meshio/issues/1576
product
https://github.com/nschloe/meshio/