CVE-2025-71353 picklescan - Remote Code Execution via torch._dynamo.guards.GuardBuilder.get
Attackers can execute arbitrary code by crafting malicious pickle files that evade picklescan detection via specific torch guard functions.
- 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-2025-71353?
CVE-2025-71353 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 0.0.28 fails to detect malicious pickle files that exploit torch._dynamo.guards.GuardBuilder.get function in reduce methods. Attackers can craft pickle files with embedded code that evades picklescan detection and executes arbitrary commands when loaded.
Weakness: CWE-502
Which versions are affected by CVE-2025-71353?
2 open source packages ship an affected version, including picklescan.
| Package | Affected | Fixed in |
|---|---|---|
picklescan PyPI | All versions | 0.0.28 |
picklescan PyPI | All versions | 0.0.28 |
How do I fix CVE-2025-71353?
Upgrade picklescan to 0.0.28 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-71353 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71353 exists.
Sources
Also known as GHSA-86cj-95qr-2p4f, GHSA-chm9-4rm6-p4gf.