CVE-2024-45857 Cleanlab Deserialization of Untrusted Data vulnerability

High 7.8 Published Updated

Attackers can execute arbitrary code by tricking users into loading a malicious pickle file in the Cleanlab library.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2024-45857?

CVE-2024-45857 is a high-severity unsafe deserialization vulnerability in cleanlab, published on 12 Sep 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Deserialization of untrusted data can occur in versions 2.4.0 or newer of the Cleanlab project, enabling a maliciously crafted datalab.pkl file to run arbitrary code on an end user’s system when the data directory is loaded.

Weakness: CWE-502

Which versions are affected by CVE-2024-45857?

3 open source packages ship an affected version, including cleanlab.

PackageAffectedFixed in
cleanlab PyPIFrom 2.4.0 to 2.6.6None
cleanlab PyPIFrom 2.4.0 to 2.6.6None
cleanlab PyPIFrom 2.4.0 to 2.6.6None

How do I fix CVE-2024-45857?

No fix has been published for CVE-2024-45857 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2024-45857 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-45857 exists.

Sources

Also known as GHSA-8cm9-rrgc-4pcj, PYSEC-2026-1254.

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