Kitware VTK (Visualization Toolkit) through 9.5.0 contains a heap use-after-free vulnerability in vtkGLTFDocumentLoader. The vulnerability manifests during mesh object copy operations where vector mem
Kitware VTK (Visualization Toolkit) through 9.5.0 contains a heap use-after-free vulnerability in vtkGLTFDocumentLoader. The vulnerability manifests during mesh object copy operations where vector members are accessed after the underlying memory has been freed, specifically when handling GLTF files with corrupted or invalid mesh reference structures.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | vtk | < 9.5.1 | 9.5.1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
-- Platform
- Python (PyPI)
- Package
vtk- Disclosed
- 31.10.2025
- Updated
- 11.10.2026 12:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2025-226 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: vtk
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 08.2022 10.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 3
Disclosures per year
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 3
- 2026: 0
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Kitware VTK (Visualization Toolkit) through 9.5.0 contains a heap use-after-free vulnerability in vtkGLTFDocumentLoader. The vulnerability manifests during mesh object copy operations where vector mem this entry
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