{"id":"CVE-2026-118589","title":"nschloe meshio VTK Reader _vtk_42.py memory allocation","summary":"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 …","severity":"medium","cvss":5.3,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-789","CWE-400"],"vendor":"nschloe","product":"meshio","affected":["meshio 5.3.0","meshio 5.3.1","meshio 5.3.2","meshio 5.3.3","meshio 5.3.4","meshio 5.3.5"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-29T15:43:42.543685Z"},"published":"2026-10-28","updated":"2026-10-29","sourceUpdated":"2026-10-29T17:20:40.744Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118589","references":[{"url":"https://vuldb.com/vuln/428027","label":"VDB-428027 | nschloe meshio VTK Reader _vtk_42.py memory allocation"},{"url":"https://vuldb.com/vuln/428027/cti","label":"VDB-428027 | CTI Indicators (IOB, IOC, IOA)"},{"url":"https://vuldb.com/cve/CVE-2026-118589","label":"CVE-2026-118589 | CVE Analysis and Report"},{"url":"https://vuldb.com/submit/1026207","label":"Submit #1026207 | nschloe meshio 5.3.5 Uncontrolled Memory Allocation"},{"url":"https://github.com/nschloe/meshio/issues/1576"},{"url":"https://github.com/nschloe/meshio/"}],"tags":["cve.org"],"epss":0.00405,"epssPercentile":0.3479,"ingestedAt":"2026-11-01T22:02:40.991Z","slug":"CVE-2026-118589","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `meshio 5.3.0`\n- `meshio 5.3.1`\n- `meshio 5.3.2`\n- `meshio 5.3.3`\n- `meshio 5.3.4`\n- `meshio 5.3.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}