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GHSA-x843-g5mx-g377: Picklescan is vulnerable to RCE through missing detection when calling built-in python operator.methodcaller

December 29, 2025

Picklescan uses operator.methodcaller, which is a built-in python library function to execute remote pickle files.

References

  • github.com/advisories/GHSA-x843-g5mx-g377
  • github.com/mmaitre314/picklescan
  • github.com/mmaitre314/picklescan/commit/70c1c6c31beb6baaf52c8db1b6c3c0e84a6f9dab
  • github.com/mmaitre314/picklescan/pull/53
  • github.com/mmaitre314/picklescan/security/advisories/GHSA-x843-g5mx-g377

Code Behaviors & Features

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Affected versions

All versions before 0.0.33

Fixed versions

  • 0.0.33

Solution

Upgrade to version 0.0.33 or above.

Impact 8.8 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-502: Deserialization of Untrusted Data
  • CWE-94: Improper Control of Generation of Code ('Code Injection')

Source file

pypi/picklescan/GHSA-x843-g5mx-g377.yml

Spotted a mistake? Edit the file on GitLab.

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