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CVE-2026-31238 — Vulnerability in ludwig — CVE Details

CRITICAL

Ludwig framework is vulnerable to insecure deserialization in its model serving component

Published May 12, 2026Updated June 29, 2026Source: osv

Summary

The Ludwig framework thru 0.10.4 is vulnerable to insecure deserialization (CWE-502) in its model serving component. When starting a model server with the ludwig serve command, the framework loads model weight files using torch.load() without enabling the security-restrictive weights_only=True parameter. This default behavior allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by providing a maliciously crafted PyTorch model file, leading to arbitrary code execution on the system hosting the Ludwig model server.

Advisory Timeline

  • First published May 12, 2026 (153 days ago).
  • Last revised June 29, 2026 — 48 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: pypi (1).

PackageEcosystemAffectedFixed In
ludwig
pypi
0.1.0, 0.1.1, 0.1.2, 0.10.0 (+52 more)Range-based data available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-502
    Deserialization of Untrusted DataMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-31238?
Ludwig framework is vulnerable to insecure deserialization in its model serving component This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2026-31238?
CVE-2026-31238 affects ludwig. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-31238 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-xp5q-5q7g-q26r
PYSEC-2026-405

Related CVEs

  • CVE-2026-31237
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    Ludwig framework is vulnerable to insecure deserialization through its predict() method.

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  • CVE-2026-61445
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  • CVE-2026-31237
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    Ludwig framework is vulnerable to insecure deserialization through its predict() method.

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