CVE-2025-71374: picklescan detection bypass via profile.Profile.run

CVE-2025-71374 · Severity: high · CVSS 8.1 · Published 2026-06-30

picklescan is a security tool used to scan Python pickle files and machine learning models for malicious code. A flaw in the tool allows specially crafted files to bypass its security checks by using a specific Python profiling function. If a user trusts the tool's clean scan result and opens the malicious file, an attacker could gain full control over the user's system.

Technologies: picklescan (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-71374 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-71374 being exploited in the wild.
How severe is CVE-2025-71374?
High severity, with a CVSS score of 8.1, published 30 June 2026.
Which products and versions are affected?
picklescan (PyPI) ECOSYSTEM:introduced=0,fixed=0.0.29.
Is there a fix for CVE-2025-71374?
Yes. picklescan (PyPI): upgrade to 0.0.29 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2025-71374 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2025-71374?
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.

How to fix

  • picklescan (PyPI): upgrade to 0.0.29 or later
    pip install "picklescan>=0.0.29"

Technical details

A deserialization vulnerability exists in picklescan due to an incomplete blocklist of dangerous functions. Specifically, the tool fails to identify the 'profile.Profile.run' function when it is invoked within a pickle's '__reduce__' method. An attacker can exploit this by crafting a malicious pickle file (often disguised as a PyTorch model) that bypasses detection. When a victim subsequently loads the file using 'pickle.load()', the embedded payload executes arbitrary system commands. This issue is addressed in version 0.0.29.

Affected products

  • picklescan picklescan < 0.0.29

Identifiers

  • CVE-2025-71374
  • GHSA-x696-vm39-cp64

Timeline

  • 2025-08-26: advisory: GHSA-x696-vm39-cp64 published
  • 2026-06-30: disclosed: CVE-2025-71374 published to NVD

References

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