What Are The Security Risks of CI/CD Plugin Architectures? | The TeamCity Blog

CI/CD plugin architectures, particularly plugin-centric models like Jenkins, present significant security risks due to their extensive reliance on independently developed plugins, which can have inconsistent security standards, delayed patching, and broad permissions. These vulnerabilities can lead to real-world security breaches, such as the 2022 BORN Group supply chain compromise. The decentralized nature of plugin development and maintenance often results in unpatched vulnerabilities and opaque dependencies, which contribute to these risks. Integrated CI/CD platforms offer a different risk profile by incorporating core functionalities natively and reducing reliance on third-party plugins, which allows for single-vendor accountability, more predictable patching cycles, and enhanced native security capabilities. Despite the inherent risks of plugin-centric architectures, Jenkins can be operated securely with disciplined operational practices, such as minimal plugin use, regular audits, and prompt patching. Switching to integrated platforms should be considered when the operational overhead of managing plugins undermines efficiency or when compliance issues arise. However, the most critical factor in maintaining security is often the team's processes and discipline rather than the choice of platform.