Vulnerability · Published Jun 23, 2026 · Assigned by VulnCheck
CVE-2025-71365picklescan - Arbitrary Code Execution via numpy.f2py.crackfortran.myeval Detection Bypass
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 before 0.0.33 fails to detect malicious pickle files that invoke numpy.f2py.crackfortran.myeval function through the reduce method. Attackers can craft malicious pickle files embedding arbitrary code that evades picklescan detection and executes remote code when loaded.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | picklescan | 0.0.33 | GHSA-3329-ghmp-jmv5 |
| PyPI | picklescan | 0.0.33 | PYSEC-2026-4131 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| picklescan | picklescan | 0 – before 0.0.33 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N