Low 2.5Published Oct 3, 2025

CVE-2025-61677DataChain: Deserialization of Untrusted Data from Environment Variables

Updated under an hour ago (Oct 26, 2026, 3:00 AM ET)

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It affects iterative datachain. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 2.5 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 6, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

iterative datachain iterative:datachain (from the name)	before 0.34.2	CNA record

References

https://github.com/iterative/datachain/security/advisories/GHSA-6px8-mr29-cj4rx-refsource-confirm
https://github.com/iterative/datachain/pull/1358x-refsource-misc
https://github.com/iterative/datachain/commit/914b95610620d50c8d9bee506ccbfa7d4d57fdc0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.