GHSA-fh2f-24rh-r2vq: Duplicate Advisory Picklescan Missing Detection When Calling Vulnerability

HIGH
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CWE-184
Published
Advisory Summary

GHSA-fh2f-24rh-r2vq is a HIGH picklescan missing detection when calling vulnerability (CWE-184: Incomplete List of Disallowed Inputs) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves picklescan missing detection when calling built-in python library function timeit.timeit(). Remediation is available by upgrading affected packages to version 0.0.25.

GHSA-fh2f-24rh-r2vq at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-fh2f-24rh-r2vq
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-184: Incomplete List of Disallowed Inputs
Affected Product Duplicate Advisory
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix GHSA-fh2f-24rh-r2vq

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

picklescan fixed: 0.0.25 
pip install picklescan>=0.0.25
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show picklescan

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-fh2f-24rh-r2vq, inspect your installed packages using pip:

pip show picklescan

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.25), your application is affected.

Note: The pip show picklescan command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-184: Incomplete List of Disallowed Inputs, where the product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete. In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-v7x6-rv5q-mhwc. This link is maintained to preserve external references. ### Original Description picklescan before 0.0.25 fails to detect malicious pickle files that use timeit.timeit() in the __reduce__ method, allowing remote code execution. Attackers can craft pickle files that import dangerous libraries like os and execute arbitrary system commands, which evade picklescan detection and execute when pickle.load() is called.

GHSA-fh2f-24rh-r2vq Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
0.0.25
Product / Package Ecosystem Affected Versions Fixed Version
picklescan
pypi/picklescan
PyPI
< 0.0.25
0.0.25

References

GitHub Advisory / Wiki ADVISORY
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-v7x6-rv5q-mhwc
NVD — GHSA-fh2f-24rh-r2vq NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-71351
Duplicate Advisory Source Repository REPOSITORY
https://github.com/mmaitre314/picklescan
www.vulncheck.com/advisories/picklesc... WEB
https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-timeit-timeit-detection-bypass

Frequently Asked Questions

What is GHSA-fh2f-24rh-r2vq?
GHSA-fh2f-24rh-r2vq is a security vulnerability in Duplicate Advisory involving Picklescan missing detection when calling built-in python library function timeit.timeit() under CWE-184: Incomplete List of Disallowed Inputs.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 0.0.25 across affected packages: picklescan.
What version fixes GHSA-fh2f-24rh-r2vq?
Upgrading to 0.0.25 (or the latest patched release for your respective branch) resolves the vulnerability.
Is picklescan affected?
Yes, picklescan is affected in releases prior to 0.0.25. Upgrade your dependency to 0.0.25 or later.
What CWE is associated with GHSA-fh2f-24rh-r2vq?
GHSA-fh2f-24rh-r2vq is classified under CWE-184: Incomplete List of Disallowed Inputs (The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.).
How can I check PyPI dependencies for GHSA-fh2f-24rh-r2vq?
Run the dependency tree command: 'pip show picklescan'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-fh2f-24rh-r2vq",
  "modified" : "2026-09-11T19:27:48Z",
  "published" : "2026-06-21T15:31:23Z",
  "withdrawn" : "2026-09-11T19:27:48Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Picklescan missing detection when calling built-in python library function timeit.timeit()",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-v7x6-rv5q-mhwc. This link is maintained to preserve external references.\n\n### Original Description\npicklescan before 0.0.25 fails to detect malicious pickle files that use timeit.timeit() in the __reduce__ method, allowing remote code execution. Attackers can craft pickle files that import dangerous libraries like os and execute arbitrary system commands, which evade picklescan detection and execute when pickle.load() is called.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "picklescan"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.25"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/mmaitre314/picklescan/security/advisories/GHSA-v7x6-rv5q-mhwc"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-71351"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mmaitre314/picklescan"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-timeit-timeit-detection-bypass"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-184" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-11T19:27:48Z",
    "nvd_published_at" : "2026-06-21T14:16:22Z"
  }
}