Vulnerability · Published Jul 4, 2026 · Assigned by VulnCheck
CVE-2025-71375picklescan - Undetected Remote Code Execution via _operator.methodcaller
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 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.5%top 59.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
picklescan before 0.0.34 fails to detect the _operator.methodcaller built-in function when scanning pickle files for malicious code. Attackers can craft malicious pickle payloads using _operator.methodcaller that evade detection and execute arbitrary code when loaded by pickle.load().
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | picklescan | 0.0.34 | GHSA-955r-x9j8-7rhh |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| picklescan | picklescan | 0 – before 0.0.34 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-955r-x9j8-7rhh) vendor-advisory
- VulnCheck Advisory: picklescan - Undetected Remote Code Execution via _operator.methodcaller third-party-advisory