Picklescan - Arbitrary Code Execution via Unsafe Numpy Function Detection Bypass | Advisories

Advisories

Picklescan - Arbitrary Code Execution via Unsafe Numpy Function Detection Bypass

severity: high
date: 6/30/2026
Affecting: Picklescan >= 0, < 0.0.25
CVE: CVE-2025-71355
CWE: CWE-184 Incomplete List of Disallowed Inputs
CVSS: 7.6
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References: GitHub Security Advisory (GHSA-fj43-3qmq-673f)
Credit: SeaW1nd
Description: Picklescan before 0.0.25 fails to detect unsafe global functions in the Numpy library, allowing attackers to bypass static analysis and execute arbitrary code during deserialization. Attackers can craft malicious pickle files using numpy.testing._private.utils.runstring within the reduce method to import dangerous libraries like os and execute arbitrary OS commands when the pickle file is loaded.

Ready to get Started?

Explore VulnCheck, a next-generation Cyber Threat Intelligence platform, which provides exploit and vulnerability intelligence to help you prioritize and remediate vulnerabilities that matter.

Vulnerability Prioritization
Prioritize vulnerabilities that matter based on the threat landscape and defer vulnerabilities that don't.
Early Warning System
Real-time alerting of changes in the vulnerability landscape so that you can take action before the attacks start.

Schedule a Demo