VulnCheck KEV: CVE-2026-53435

In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled config.xml submission in a way that allows them to handle HTTP requests afterwards. This can be used to...

CVE-2026-53435

In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled config.xml submission in a way that allows them to handle HTTP requests afterwards. This can be used to...

Deserialization vulnerability

Jenkins uses serialization and deserialization in multiple places, like agent/controller communication the Remoting library and to load and save configuration and build data using XStream. To protect from common deserialization vulnerabilities, Jenkins uses a custom deserialization filter that on...