CVE-2025-71351

picklescan · picklescan

A security vulnerability exists in the picklescan library that may allow for unauthorized code execution during the deserialization of untrusted pickle files.

Executive summary

The picklescan library contains a high-severity vulnerability that could allow attackers to execute arbitrary code via malicious pickle payloads.

Vulnerability

This vulnerability involves insecure deserialization practices within the picklescan utility. An attacker could potentially trigger this flaw by submitting a crafted, malicious pickle file to an application utilizing the affected library.

Business impact

The exploitation of this vulnerability could lead to complete system compromise, including unauthorized data access and arbitrary code execution. Given the CVSS score of 7.6, this flaw represents a significant risk to organizational integrity and confidentiality, particularly in environments that process user-supplied serialized data.

Remediation

Immediate Action: Upgrade to the latest version of picklescan as specified by the vendor to ensure the insecure deserialization flaw is addressed.

Proactive Monitoring: Monitor application logs for anomalous process execution patterns or unusual file access behaviors originating from the picklescan module.

Compensating Controls: Implement strict input validation or sandboxing for any system that processes serialized Python objects to prevent the parsing of untrusted data.

Exploitation status

Public Exploit Available: false

Analyst recommendation

Organizations utilizing picklescan must prioritize updating their dependencies immediately. Given the risk of remote code execution, failing to patch this vulnerability leaves internal systems susceptible to severe compromise by attackers utilizing malicious pickle payloads.