GHSA-fcqg-3mwf-cfcf: Duplicate Advisory Picklescan Is Missing Detection When Vulnerability

HIGH
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CVSS 8.1
CWE-502
Published
Advisory Summary

GHSA-fcqg-3mwf-cfcf is a HIGH (CVSS 8.1) picklescan is missing detection when vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves picklescan is missing detection when calling built-in python cprofile.runctx. Remediation is available by upgrading affected packages to version 0.0.30.

GHSA-fcqg-3mwf-cfcf at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-fcqg-3mwf-cfcf
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Duplicate Advisory
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix GHSA-fcqg-3mwf-cfcf

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: 0.0.30 
pip install picklescan>=0.0.30
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-fcqg-3mwf-cfcf, 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 0.0.30), 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-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. 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-9w88-8rmg-7g2p. This link is maintained to preserve external references. ### Original Description picklescan before 0.0.30 fails to detect cProfile.runctx function calls in pickle file reduce methods, allowing attackers to execute arbitrary code. Malicious pickle files bypass picklescan detection and execute remote code when loaded via pickle.load().

GHSA-fcqg-3mwf-cfcf Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
0.0.30
Product / Package Ecosystem Affected Versions Fixed Version
picklescan
pypi/picklescan
PyPI
< 0.0.30
0.0.30

References

GitHub Advisory / Wiki ADVISORY
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-9w88-8rmg-7g2p
NVD — GHSA-fcqg-3mwf-cfcf NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-71378
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-undetected-cprofile-runctx-in-pickle-files

Frequently Asked Questions

What is GHSA-fcqg-3mwf-cfcf?
GHSA-fcqg-3mwf-cfcf is a security vulnerability in Duplicate Advisory involving Picklescan is missing detection when calling built-in Python cProfile.runctx under CWE-502: Deserialization of Untrusted Data.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 0.0.30 across affected packages: picklescan.
What version fixes GHSA-fcqg-3mwf-cfcf?
Upgrading to 0.0.30 (or the latest patched release for your respective branch) resolves the vulnerability.
Is picklescan affected?
Yes, picklescan is affected in releases prior to 0.0.30. Upgrade your dependency to 0.0.30 or later.
What is the CVSS score of GHSA-fcqg-3mwf-cfcf?
GHSA-fcqg-3mwf-cfcf has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
What CWE is associated with GHSA-fcqg-3mwf-cfcf?
GHSA-fcqg-3mwf-cfcf is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check PyPI dependencies for GHSA-fcqg-3mwf-cfcf?
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-fcqg-3mwf-cfcf",
  "modified" : "2026-09-11T19:20:36Z",
  "published" : "2026-06-21T15:31:23Z",
  "withdrawn" : "2026-09-11T19:20:36Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Picklescan is missing detection when calling built-in Python cProfile.runctx",
  "details" : "### Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-9w88-8rmg-7g2p. This link is maintained to preserve external references.\n\n### Original Description\n\npicklescan before 0.0.30 fails to detect cProfile.runctx function calls in pickle file reduce methods, allowing attackers to execute arbitrary code. Malicious pickle files bypass picklescan detection and execute remote code when loaded via pickle.load().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"
  }, {
    "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" : "0.0.30"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/mmaitre314/picklescan/security/advisories/GHSA-9w88-8rmg-7g2p"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-71378"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mmaitre314/picklescan"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-undetected-cprofile-runctx-in-pickle-files"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-11T19:20:36Z",
    "nvd_published_at" : "2026-06-21T14:16:23Z"
  }
}