CVE-2022-29047 in Shared Groovy Libraries Plugin
Summary
by MITRE • 04/13/2022
Jenkins Pipeline: Shared Groovy Libraries Plugin 564.ve62a_4eb_b_e039 and earlier, except 2.21.3, allows attackers able to submit pull requests (or equivalent), but not able to commit directly to the configured SCM, to effectively change the Pipeline behavior by changing the definition of a dynamically retrieved library in their pull request, even if the Pipeline is configured to not trust them.
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Analysis
by VulDB Data Team • 05/05/2026
The vulnerability identified as CVE-2022-29047 affects the Jenkins Pipeline Shared Groovy Libraries Plugin version 564.ve62a_4eb_b_e039 and earlier, excluding version 2.21.3. This security flaw represents a critical access control bypass that undermines the security model of Jenkins pipelines, particularly when dealing with pull request workflows in source code management systems. The vulnerability specifically targets environments where developers can submit pull requests but lack direct commit privileges to the main repository, creating a dangerous scenario where untrusted users can manipulate pipeline execution behavior through library modifications.
The technical flaw exploits the plugin's handling of dynamically retrieved shared libraries within pull request contexts. When a Jenkins pipeline configuration references shared Groovy libraries, the system typically retrieves these libraries from the configured source code management system. However, this vulnerability allows attackers with pull request submission privileges to modify library definitions in their pull requests, effectively changing how the pipeline executes even when the pipeline is explicitly configured to not trust untrusted users. The flaw stems from inadequate validation of library changes during pull request processing, where the system fails to properly isolate or verify modifications made to shared libraries in the pull request context.
The operational impact of this vulnerability is severe as it enables attackers to potentially execute arbitrary code or modify pipeline behavior without proper authorization. An attacker could modify shared library functions to perform malicious actions such as exfiltrating sensitive data, executing unauthorized commands, or manipulating build processes. This represents a fundamental breach of the principle of least privilege in Jenkins security architecture, where the system's trust model is circumvented through seemingly innocuous pull request modifications. The vulnerability affects organizations that rely on shared libraries for pipeline code reuse and that employ pull request workflows for code review and integration.
This vulnerability aligns with CWE-284 Access Control Bypass and maps to ATT&CK technique T1059 Command and Scripting Interpreter, specifically targeting the execution of malicious code through modified pipeline libraries. Organizations using Jenkins with pull request workflows and shared library configurations are at significant risk, particularly those that do not properly segment or validate library modifications in code review processes. The vulnerability demonstrates the importance of implementing proper isolation mechanisms for dynamic library loading and the need for comprehensive security testing of integration points between code review systems and pipeline execution environments. The recommended mitigation involves upgrading to version 2.21.3 or later of the Jenkins Pipeline Shared Groovy Libraries Plugin, implementing additional validation checks for library modifications, and establishing more restrictive access controls for pull request processing.