CVE-2025-71366 picklescan - Arbitrary Code Execution via torch.utils.bottleneck.__main__.run_cprofile
Attackers can bypass safety checks in picklescan to achieve arbitrary code execution by embedding malicious functions in pickle files.
- 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-2025-71366?
CVE-2025-71366 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 torch.utils.bottleneck.__main__.run_cprofile function calls in pickle files, allowing attackers to bypass safety checks. Remote attackers can embed undetected code in pickle files to achieve arbitrary code execution when victims load the files.
Weakness: CWE-502
Which versions are affected by CVE-2025-71366?
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-2025-71366?
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-2025-71366 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71366 exists.
Sources
Also known as GHSA-4r9r-ch6f-vxmx, GHSA-gxr9-6xqp-fggf.