SB2026111244 - Deserialization of Untrusted Data in PyTorch

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Main Vulnerability Database SB2026111244

SB2026111244 - Deserialization of Untrusted Data in PyTorch

Published: November 12, 2026

Security Bulletin ID SB2026111244
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Deserialization of Untrusted Data (CVE-ID: N/A)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to read arbitrary text files accessible to the victim process.

The vulnerability exists due to unsafe deserialization in torch.load(weights_only=True), which trusts Python's traceback.FrameSummary class when loading checkpoints. A remote attacker can induce a victim to load a malicious checkpoint specifying filenames and line numbers to disclose file contents through application logging, display, or re-saving of the loaded object.


Remediation

Install update from vendor's website.

References