Jenkins Warnings Plugin 10.5.0 and earlier does not set the appropriate context for credentials lookup, allowing attackers with Item/Configure permission to access and capture credentials they are not entitled to. This fix has been backported to 10.4.1.
A cross-site request forgery vulnerability exists in Jenkins Warnings Plugin 5.0.0 and earlier in src/main/java/hudson/plugins/warnings/GroovyParser.java that allows attackers to execute arbitrary code via a form validation HTTP endpoint.