Vulnerability · Published Jun 25, 2026 · Assigned by VulnCheck

CVE-2025-71340picklescan - Remote Code Execution via idlelib.pyshell.ModifiedInterpreter.runcode

High 8.1

In plain English

A high-severity unsafe deserialization in picklescan from picklescan. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.4%top 67.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

picklescan through 0.0.26 fails to detect malicious pickle files that invoke idlelib.pyshell.ModifiedInterpreter.runcode in __reduce__ methods. Attackers can embed undetected code in pickle files that executes arbitrary commands when the file is loaded via pickle.load(), enabling supply chain attacks on PyTorch models and saved Python objects. This is fixed in version 0.0.30.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	picklescan	0.0.30	GHSA-3gf5-cxq9-w223

Affected products (as reported)

Vendor	Product	Versions
picklescan	picklescan	0 – through 0.0.26

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References

GitHub Security Advisory (GHSA-3gf5-cxq9-w223) vendor-advisory
VulnCheck Advisory: picklescan - Remote Code Execution via idlelib.pyshell.ModifiedInterpreter.runcode third-party-advisory