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OpenAdvisories
Low · 2.5 CVE-2025-61677 EUVD-2025-32652GHSA-6px8-mr29-cj4rPYSEC-2026-1288

DataChain: Deserialization of Untrusted Data from Environment Variables

Published Oct 3, 2025 · Updated Oct 6, 2025 · Assigned by GitHub_M

Description

DataChain is a Python-based AI-data warehouse for transforming and analyzing unstructured data. Versions 0.34.1 and below allow for deseriaization of untrusted data because of the way the DataChain library reads serialized objects from environment variables (such as DATACHAIN__METASTORE and DATACHAIN__WAREHOUSE) in the loader.py module. An attacker with the ability to set these environment variables can trigger code execution when the application loads. This issue is fixed in version 0.34.2.

Affected products

VendorProductAffectedFixed
iterative datachain < 0.34.2 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI datachain < 0.34.2 0.34.2 GHSA-6px8-mr29-cj4r

References