CVE-2025-10157 PickleScan Bypasses Unsafe Globals Check Using Submodule Imports

Critical 9.3 Published 17 Sep 2025 Updated 17 Sep 2025

Attackers can bypass PickleScan's safety checks using submodule imports to execute malicious code when loading scanned pickle files.

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

What is CVE-2025-10157?

CVE-2025-10157 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

A Protection Mechanism Failure vulnerability in mmaitre314 picklescan versions up to and including 0.0.30 allows a remote attacker to bypass the unsafe globals check. This is possible because the scanner performs an exact match for module names, allowing malicious payloads to be loaded via submodules of dangerous packages (e.g., 'asyncio.unix_events' instead of 'asyncio').

When the incorrectly considered safe file is loaded after scan, it can lead to the execution of malicious code.

Weakness: CWE-693

Which versions are affected by CVE-2025-10157?

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-2025-10157?

Upgrade picklescan to 0.0.31 or later.

Is CVE-2025-10157 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10157 exists.

Sources

Also known as GHSA-f7qq-56ww-84cr, PYSEC-2025-153.