CVE-2025-61677: Datachain DataChain Vulnerable To Deserialization Of Vulnerability

LOW
Advisory Identifier: GHSA-6px8-mr29-cj4r
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CVSS 2.5
CWE-502
Published
Advisory Summary

CVE-2025-61677 is a LOW (CVSS 2.5) datachain vulnerable to deserialization of vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Datachain libraries in the PyPI ecosystem. The issue involves datachain vulnerable to deserialization of untrusted data from environment variables. Remediation is available by upgrading affected packages to version 0.34.2.

CVE-2025-61677 at a Glance

CVE Identifier CVE-2025-61677
GHSA Identifier GHSA-6px8-mr29-cj4r
Severity LOW
CVSS v3.1 Base Score 2.5
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Datachain
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 2.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Local (AV:L)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-61677

To remediate this vulnerability, upgrade all affected Datachain dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

datachain fixed: 0.34.2 
pip install datachain>=0.34.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show datachain

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-61677, inspect your installed packages using pip:

pip show datachain

Analyze the terminal output to locate any version of Datachain in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.34.2), your application is affected.

Note: The pip show datachain command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Datachain, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-61677 Affected Datachain Versions

1 component(s)
Fixed Versions:
0.34.2
Product / Package Ecosystem Affected Versions Fixed Version
datachain
pypi/datachain
PyPI
< 0.34.2
0.34.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/iterative/datachain/security/advisories/GHSA-6px8-mr29-cj4r
NVD — CVE-2025-61677 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61677
Datachain Source Repository REPOSITORY
https://github.com/iterative/datachain/pull/1358
Security Fix Commit FIX COMMIT
https://github.com/iterative/datachain/commit/914b95610620d50c8d9bee506ccbfa7d4d57fdc0
Datachain Source Repository REPOSITORY
https://github.com/iterative/datachain

Frequently Asked Questions

What is CVE-2025-61677?
CVE-2025-61677 is a security vulnerability in Datachain involving DataChain Vulnerable to Deserialization of Untrusted Data from Environment Variables under CWE-502: Deserialization of Untrusted Data.
Which Datachain versions are affected?
Affected versions include releases prior to 0.34.2 across affected packages: datachain.
What version fixes CVE-2025-61677?
Upgrading to 0.34.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is datachain affected?
Yes, datachain is affected in releases prior to 0.34.2. Upgrade your dependency to 0.34.2 or later.
What is the CVSS score of CVE-2025-61677?
CVE-2025-61677 has a CVSS v3.1 base score of 2.5 (LOW) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2025-61677?
CVE-2025-61677 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check PyPI dependencies for CVE-2025-61677?
Run the dependency tree command: 'pip show datachain'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-6px8-mr29-cj4r",
  "modified" : "2025-10-13T15:10:32Z",
  "published" : "2025-10-02T16:24:46Z",
  "aliases" : [ "CVE-2025-61677" ],
  "summary" : "DataChain Vulnerable to Deserialization of Untrusted Data from Environment Variables",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "datachain"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.34.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/iterative/datachain/security/advisories/GHSA-6px8-mr29-cj4r"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-61677"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/iterative/datachain/pull/1358"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/iterative/datachain/commit/914b95610620d50c8d9bee506ccbfa7d4d57fdc0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/iterative/datachain"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-02T16:24:46Z",
    "nvd_published_at" : "2025-10-03T22:15:32Z"
  }
}