Bug 2511172 (CVE-2026-47781)

Summary: CVE-2026-47781 pdm: PDM: Arbitrary Code Execution via Project-Controlled Plugin Loading
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in PDM, a Python package and dependency manager. This vulnerability allows an attacker to execute arbitrary Python code by placing a malicious file in a project's `.pdm-plugins` directory within an untrusted repository. When a user invokes PDM, even with a benign command, the malicious code is automatically loaded and executed with the user's privileges, leading to arbitrary code execution.
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Description OSIDB Bzimport 2026-08-04 19:01:34 UTC 
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.