CVE-2025-10155 PickleScan Security Bypass Using Misleading File Extension

Critical 9.3 Published 17 Sep 2025 Updated 17 Sep 2025

Attackers can bypass security checks in picklescan by using misleading file extensions, leading to malicious code execution when the file is loaded.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2025-10155?

CVE-2025-10155 is a critical vulnerability in mmaitre314 picklescan, published on 17 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An Improper Input Validation vulnerability in the scanning logic of mmaitre314 picklescan versions up to and including 0.0.30 allows a remote attacker to bypass pickle files security checks by supplying a standard pickle file with a PyTorch-related file extension. When the pickle file incorrectly considered safe is loaded, it can lead to the execution of malicious code.

Weakness: CWE-20

Which versions are affected by CVE-2025-10155?

3 open source packages ship an affected version, including picklescan. It affects 1 product.

Package	Affected	Fixed in
`picklescan` PyPI	All versions	`0.0.31`
`picklescan` PyPI	All versions	`0.0.31`
`picklescan` PyPI	All versions	`0.0.31`

Products include Mmaitre314 Picklescan.

How do I fix CVE-2025-10155?

Upgrade picklescan to 0.0.31 or later.

Is CVE-2025-10155 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10155 exists.

Sources

Also known as GHSA-jgw4-cr84-mqxg, PYSEC-2025-151.