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GHSA-9m3x-qqw2-h32h: picklescan missing detection by simple obfuscation of a `builtins.eval` call

February 2, 2026 (updated June 18, 2026)

An unsafe deserialization vulnerability allows any unauthenticated user to execute arbitrary code on the host loading a pickle payload from an untrusted source.

References

  • github.com/advisories/GHSA-9m3x-qqw2-h32h
  • github.com/mmaitre314/picklescan/commit/173c8f2a869ea9b69b543477525ec70611c3c6f4
  • github.com/mmaitre314/picklescan/pull/59
  • github.com/mmaitre314/picklescan/releases/tag/v1.0.1
  • github.com/mmaitre314/picklescan/security/advisories/GHSA-9m3x-qqw2-h32h
  • nvd.nist.gov/vuln/detail/CVE-2026-53874
  • www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-obfuscated-eval-call

Code Behaviors & Features

Detect and mitigate GHSA-9m3x-qqw2-h32h with GitLab Dependency Scanning

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Affected versions

All versions before 1.0.1

Fixed versions

  • 1.0.1

Solution

Upgrade to version 1.0.1 or above.

Impact 9.8 CRITICAL

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

Learn more about CVSS

Weakness

  • CWE-502: Deserialization of Untrusted Data

Source file

pypi/picklescan/GHSA-9m3x-qqw2-h32h.yml

Spotted a mistake? Edit the file on GitLab.

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