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HIGH7.8

PYSEC-2026-1254

Cleanlab Deserialization of Untrusted Data vulnerability

Details

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.

Are you affected?

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Affected packages

PyPI/cleanlab
Introduced in: 2.4.0

No fixed version published yet for cleanlab (pip). Pin to a known-safe version or switch to an alternative.

References