CVE-2026-70426

In Remoting 3384.v60d89463d9e0 and earlier, except 3355.3357.v931d3c992987, included in Jenkins 2.575 and earlier, LTS 2.568.1 and earlier, the JEP-200 class filter is not applied to classes resolved via a fallback path in the Remoting deserialization implementation, allowing agent processes, cod...

Agent-to-controller deserialization filter bypass

Jenkins uses the https://github.com/jenkinsci/remotingRemoting library typically agent.jar or remoting.jar for communication between the controller and agents via serialized Java objects. To protect against deserialization vulnerabilities, Jenkins enforces the https://jenkins.io/jep/200JEP-200...

jenkins: Arbitrary file read vulnerability through agent connections can lead to RCE

A vulnerability was found in the Remoting library in Jenkins core, which handles communication between the Jenkins controller and agents. The ClassLoaderProxyfetchJar function may allow malicious agents or attackers with Agent/Connect permission to read arbitrary files from the Jenkins controller...

Arbitrary File Read

org.jenkins-ci.main, jenkins-core and org.jenkins-ci.main, remoting are vulnerable to Arbitrary File Read. The vulnerability is caused due to a missing validation on the file paths that are invoked on the controller by the agent while retrieving files using API ClassLoaderProxyfetchJar. This allo...