Is This vulnerability exploited in the wild?

No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

How severe is This vulnerability?

High severity, with a CVSS score of 7.1, published 17 June 2026.

Is there a fix for This vulnerability?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is This vulnerability attacked?

It is attacked over the network, in a software library.

Check whether you run picklescan (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Picklescan scanning bypass in scan_pytorch via eval injection

Severity: high · CVSS 7.1 · Published 2026-06-17

Picklescan is a security tool used to scan machine learning models for malicious code before they are loaded. A vulnerability in how it checks PyTorch files allows attackers to hide malicious code inside a model file in a way that bypasses the scanner's detection. If a user is tricked into loading one of these "clean-looking" but malicious files, an attacker could execute arbitrary commands on the user's computer.

Technologies: picklescan (PyPI). Vendors: PyPI.

Quick answers

Is This vulnerability exploited in the wild?: No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.
How severe is This vulnerability?: High severity, with a CVSS score of 7.1, published 17 June 2026.
Which products and versions are affected?: picklescan (PyPI) < 1.0.3.
Is there a fix for This vulnerability?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is This vulnerability attacked?: It is attacked over the network, in a software library.
Am I affected?: Check whether you run picklescan (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A scanning bypass exists in picklescan's 'scan_pytorch' function due to a discrepancy between how the scanner and PyTorch identify file magic numbers. While picklescan uses 'pickletools.genops' to look for specific integer or long opcodes, PyTorch uses 'pickle_module.load()'. An attacker can use the '__reduce__' magic method and 'eval' to dynamically generate the expected magic number at runtime. This allows a malicious PyTorch payload to appear invalid or benign to the scanner while remaining fully executable by 'torch.load()', leading to arbitrary code execution. The issue is addressed in version 1.0.3.

Affected products

mmaitre314 picklescan < 1.0.3

Timeline

2026-02-16: advisory: Original GHSA-97f8-7cmv-76j2 published
2026-06-17: disclosed: CVE-2026-53875 published
2026-06-18: other: Duplicate advisory GHSA-cc5p-54x3-hcf8 withdrawn

References

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