GHSA-j424-mc44-f4hj: Duplicate Advisory Picklescan Bypass Is Possible Vulnerability

CRITICAL
Share
CWE-20
Published
Advisory Summary

GHSA-j424-mc44-f4hj is a CRITICAL picklescan bypass is possible vulnerability (CWE-20: Improper Input Validation) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves picklescan bypass is possible via file extension mismatch. Remediation is available by upgrading affected packages to version 0.0.31.

GHSA-j424-mc44-f4hj at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-j424-mc44-f4hj
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-20: Improper Input Validation
Affected Product Duplicate Advisory
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix GHSA-j424-mc44-f4hj

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: 0.0.31 
pip install picklescan>=0.0.31
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-j424-mc44-f4hj, 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 0.0.31), 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-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. 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### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-jgw4-cr84-mqxg. This link is maintained to preserve external references. ### Original Description An Improper Input Validation vulnerability in the scanning logic of mmaitre314 picklescan versions up to and including 0.0.30 allows a remote attacker to bypass pickle files security checks by supplying a standard pickle file with a PyTorch-related file extension. When the pickle file incorrectly considered safe is loaded, it can lead to the execution of malicious code.

GHSA-j424-mc44-f4hj Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
0.0.31
Product / Package Ecosystem Affected Versions Fixed Version
picklescan
pypi/picklescan
PyPI
< 0.0.31
0.0.31

References

GitHub Advisory / Wiki ADVISORY
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-jgw4-cr84-mqxg
NVD — GHSA-j424-mc44-f4hj NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-10155
Duplicate Advisory Source Repository REPOSITORY
https://github.com/mmaitre314/picklescan/blob/58983e1c20973ac42f2df7ff15d7c8cd32f9b688/src/picklescan/scanner.py#L463

Frequently Asked Questions

What is GHSA-j424-mc44-f4hj?
GHSA-j424-mc44-f4hj is a security vulnerability in Duplicate Advisory involving Picklescan Bypass is Possible via File Extension Mismatch under CWE-20: Improper Input Validation.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 0.0.31 across affected packages: picklescan.
What version fixes GHSA-j424-mc44-f4hj?
Upgrading to 0.0.31 (or the latest patched release for your respective branch) resolves the vulnerability.
Is picklescan affected?
Yes, picklescan is affected in releases prior to 0.0.31. Upgrade your dependency to 0.0.31 or later.
What CWE is associated with GHSA-j424-mc44-f4hj?
GHSA-j424-mc44-f4hj is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check PyPI dependencies for GHSA-j424-mc44-f4hj?
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-j424-mc44-f4hj",
  "modified" : "2025-09-17T20:24:33Z",
  "published" : "2025-09-17T12:30:57Z",
  "withdrawn" : "2025-09-17T20:24:33Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Picklescan Bypass is Possible via File Extension Mismatch",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-jgw4-cr84-mqxg. This link is maintained to preserve external references.\n\n### Original Description\nAn Improper Input Validation vulnerability in the scanning logic of mmaitre314 picklescan versions up to and including 0.0.30 allows a remote attacker to bypass pickle files security checks by supplying a standard pickle file with a PyTorch-related file extension. When the pickle file incorrectly considered safe is loaded, it can lead to the execution of malicious code.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "picklescan"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.31"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/mmaitre314/picklescan/security/advisories/GHSA-jgw4-cr84-mqxg"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-10155"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mmaitre314/picklescan/blob/58983e1c20973ac42f2df7ff15d7c8cd32f9b688/src/picklescan/scanner.py#L463"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-09-17T20:24:33Z",
    "nvd_published_at" : "2025-09-17T10:15:36Z"
  }
}