CVE-2026-47781

pdm: Project-Controlled `.pdm-plugins` Content Executes Before CLI Parsing

State
Published
Severity
8.4 High
Published
Aug 4, 2026
Updated
Aug 5, 2026
Reserved
May 19, 2026

Read the record on cve.org

Description

PDM is a Python package and dependency manager. In versions up to and including 2.26.9, PDM automatically loads project-local plugins from a .pdm-plugins directory during initialization, allowing an attacker-controlled file in an untrusted repository checkout to execute arbitrary Python code before any command is parsed. This happens because load_plugins() runs during Core.init() and adds .pdm-plugins via site.addsitedir(), which processes .pth files and immediately executes any line beginning with import, so the code runs with the privileges of the user invoking pdm and even a benign command such as pdm --version triggers it (making the impact strongest in CI, automation, and privileged contexts). The issue is fixed in version 2.27.0.

Scores

CVSSScoreVectorSource
4.08.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NGitHub_M

Weaknesses

  • CWE-829 Inclusion of Functionality from Untrusted Control Sphere
  • CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

ProductVersions
pdmpdm-project
  • < 2.27.0Affected

References

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