Investigate in your agent.

Turn this advisory into a focused investigation. Ask your agent to check your project’s versions, explain the evidence, and suggest a compatible fix.

Your agent needs remote MCP support and access to https://cve.new/mcp.

Read the setup guide

Skip to content
cve.new Create a CVE report
Check your stack
CVE-2026-118589medium6.9

nschloe meshio VTK Reader _vtk_42.py memory allocation

Impact

A weakness in nschloe meshio up to version 5.3.5 allows uncontrolled memory allocation via the DIMENSIONS argument in the VTK Reader's _vtk_42.py file. The attack can be executed remotely.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

nschloe · VulDB

meshio

6 ranges
VulDB version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

5.3.0

5.3.1

5.3.2

5.3.3

5.3.4

5.3.5

unaffected

unknown

Other versions: unknown

Product identifiers (CPE)cpe:2.3:a:nschloe:meshio:*:*:*:*:*:*:*:*

Original source 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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-118589

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-789 ↗

Uncontrolled Memory Allocation

VulDB

Related →
CWE-400 ↗

Resource Consumption

VulDB

Related →
Contributing organizations · 2
VulDB

Assigning organization

2026-10-28
CISA-ADP

Additional data publisher

2026-10-29

What changed

Follow changes
  1. CVE · CVE-2026-118589

    Observed 2026-10-29T17:51:45.778Z · upstream updated 2026-10-29T17:20:40.744Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-10-29T15:43:42.543685Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "yes"
      },
      {
        "name": "Technical Impact",
        "value": "partial"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

References

6 sources
vuldb.com/vuln/428027
vdb-entryVulDB
vuldb.com/vuln/428027/cti
signatureVulDB
vuldb.com/cve/CVE-2026-118589
third-party-advisoryVulDB
vuldb.com/submit/1026207
third-party-advisoryVulDB
github.com/nschloe/meshio/issues/1576
issue-trackingVulDB
github.com/nschloe/meshio/
productVulDB