Is CVE-2025-71355 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-71355 being exploited in the wild.

How severe is CVE-2025-71355?

Medium severity, with a CVSS score of 4, published 30 June 2026.

Which products and versions are affected?

picklescan (PyPI) ECOSYSTEM:introduced=0,fixed=0.0.25.

Is there a fix for CVE-2025-71355?

Yes. picklescan (PyPI): upgrade to 0.0.25 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2025-71355 attacked?

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

Am I affected by CVE-2025-71355?

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.

CVE-2025-71355: Picklescan detection bypass via unsafe Numpy functions

CVE-2025-71355 · Severity: medium · CVSS 4 · Published 2026-06-30

Picklescan is a security tool used to scan Python pickle files and machine learning models for malicious code. A vulnerability was discovered where the tool fails to identify dangerous functions within the Numpy library, allowing specially crafted malicious files to bypass security checks. If a user trusts the scan results and opens such a file, an attacker could execute arbitrary commands on the user's system, potentially leading to a full system compromise.

Technologies: picklescan (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-71355 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-71355 being exploited in the wild.
How severe is CVE-2025-71355?: Medium severity, with a CVSS score of 4, published 30 June 2026.
Which products and versions are affected?: picklescan (PyPI) ECOSYSTEM:introduced=0,fixed=0.0.25.
Is there a fix for CVE-2025-71355?: Yes. picklescan (PyPI): upgrade to 0.0.25 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2025-71355 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2025-71355?: 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 0.0.25 or later
```
pip install "picklescan>=0.0.25"
```

Technical details

Picklescan (versions prior to 0.0.25) contains an incomplete list of disallowed inputs (CWE-184) in its safety blacklist. Specifically, it fails to flag the 'numpy.testing._private.utils.runstring' function, which can be used within a pickle's __reduce__ method to execute arbitrary Python code. An attacker can craft a malicious pickle file that imports the 'os' library via this Numpy function to execute shell commands. The vulnerability is exploited when a victim scans a malicious file, receives a 'clean' report due to the bypass, and subsequently loads the file using 'pickle.load()'. The issue is resolved in version 0.0.25 by adding Numpy to the unsafe globals list.

Affected products

mmaitre314 picklescan < 0.0.25

Identifiers

CVE-2025-71355
GHSA-fj43-3qmq-673f

Timeline

2025-04-06: advisory: GitHub Security Advisory published
2026-06-30: disclosed: NVD publication date

References

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