CVE-2025-71342 picklescan - Undetected Remote Code Execution via idlelib.run.Executive.runcode
Attackers can execute arbitrary code via malicious pickle files bypassing picklescan detection, impacting PyTorch model loading and supply chains.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-71342?
CVE-2025-71342 is a high-severity unsafe deserialization vulnerability in picklescan, published on 4 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
picklescan before 0.0.30 fails to detect malicious pickle files using idlelib.run.Executive.runcode in reduce methods. Attackers can embed undetected code in pickle files that executes during pickle.load, enabling remote code execution in PyTorch models and supply chain attacks.
Weakness: CWE-502
Which versions are affected by CVE-2025-71342?
2 open source packages ship an affected version, including picklescan.
| Package | Affected | Fixed in |
|---|---|---|
picklescan PyPI | All versions | 0.0.30 |
picklescan PyPI | All versions | 0.0.30 |
How do I fix CVE-2025-71342?
Upgrade picklescan to 0.0.30 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-71342 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71342 exists.
Sources
Also known as GHSA-j6fw-8849-4cxh, GHSA-m869-42cg-3xwr.