2.5

CVSS Score

3.1

-

CVSS Score

Basic Information

Concerned about an active attack path?

Talk to our security experts and see Miggo in action.

Miggo Vulnerability Database

→

CVE-2025-61677

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

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.

(GitHub Advisory)

Miggo Vulnerability Database

→

CVE-2025-61677

CVE-2025-61677:

2.5

CVSS Score

3.1

-

CVSS Score

Basic Information

Is this CVE running in your environment?

Easily map the attack path and prioritize which CVEs are a threat to your organization

Validate Exposure

Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
datachain	pip	< 0.34.2	0.34.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability exists due to the use of pickle.loads on untrusted data originating from environment variables. The core of the vulnerability lies in the datachain.data_storage.serializer.deserialize function, which directly calls pickle.loads on its input. This function is called by datachain.catalog.loader.get_metastore and datachain.catalog.loader.get_warehouse, which read serialized data from the DATACHAIN__METASTORE and DATACHAIN__WAREHOUSE environment variables respectively. An attacker with the ability to set these environment variables can provide a malicious pickle payload, leading to arbitrary code execution when the application initializes the metastore or warehouse. The patch mitigates this by replacing the insecure pickle-based serialization with a safe, json-based approach that uses a registry of allowed classes (CallableRegistry) to prevent the instantiation of arbitrary objects.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

Vulnerability Intelligence
Miggo AI

Unlock WAF rules for this CVE

Generate vendor-ready rules for the observed attack patterns, plus reasoning and safe deployment guidance

Get WAF rules

WAF Protection Rules

WAF Rule

W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.

Reasoning

*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.