CVE-2025-71362 picklescan - Arbitrary Code Execution via Unsafe Deserialization in numpy.f2py.crackfortran
Attackers can execute arbitrary code by embedding malicious payloads in pickle files that bypass picklescan's detection mechanisms.
- 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-2025-71362?
CVE-2025-71362 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 0.0.33 fails to detect unsafe deserialization when numpy.f2py.crackfortran functions call eval on arbitrary strings. Attackers can embed malicious code in pickle files that executes when loaded from untrusted sources.
Weakness: CWE-502
Which versions are affected by CVE-2025-71362?
2 open source packages ship an affected version, including picklescan.
| Package | Affected | Fixed in |
|---|---|---|
picklescan PyPI | All versions | 0.0.33 |
picklescan PyPI | All versions | 0.0.33 |
How do I fix CVE-2025-71362?
Upgrade picklescan to 0.0.33 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-71362 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71362 exists.
Sources
Also known as GHSA-r8g5-cgf2-4m4m, GHSA-r9x2-mw85-9c4x.