Jenkins

Jenkins versions prior to 2.442 and LTS 2.426.3 contain an arbitrary file read vulnerability caused by the CLI parser improperly expanding @ file references, allowing unauthenticated attackers to read contents from the Jenkins controller filesystem.

Multiple vulnerabilities exist in Jenkins Plugins that could allow an attacker to disclose information, manipulate files, conduct cross-site scripting attacks, execute arbitrary code, and bypass security measures.

Jenkins released a security advisory on April 29, 2026, detailing vulnerabilities in Credentials Binding Plugin, GitHub Plugin, GitHub Branch Source Plugin, HTML Publisher Plugin, Matrix Authorization Strategy Plugin, Microsoft Entra ID Plugin, and Script Security Plugin, urging users to apply necessary updates.