The Ludwig framework thru 0.10.4 is vulnerable to insecure deserialization (CWE-502) in its model serving component.
Date: 2026-05
Attack vector: deserialization
Category: vulnerability-disclosure
Severity: Critical
CVE: CVE-2026-31238
CWE: CWE-502
CVSS: 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

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.


Mitigations:

Architectural layers (MAESTRO):