Getting "java.lang.String cannot be cast to java.util.List" after upgrading to saml-plugin 2.0.0

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    • Type: Bug
    • Resolution: Fixed
    • Priority: Minor
    • Component/s: saml-plugin
    • Environment:
      OS: Amazon Linux release 2 (Karoo)
      Jenkins version: 2.282
      saml-plugin version: 2.0.0
    • saml-2.0.3

      After upgrading to 2.0.0, when users are redirected back to `/securityRealm/finishLogin ` the following exception is thrown:

      WARNING o.e.j.s.h.ContextHandler$Context#log: Error while serving http://jenkins.domain/securityRealm/finishLogin 
java.lang.ClassCastException: java.lang.String cannot be cast to java.util.List 
        at org.jenkinsci.plugins.saml.SamlSecurityRealm.modifyUserFullName(SamlSecurityRealm.java:453) 
        at org.jenkinsci.plugins.saml.SamlSecurityRealm.doFinishLogin(SamlSecurityRealm.java:335) 
        at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627) 
        at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:396) 
Caused: java.lang.reflect.InvocationTargetException

      However if you continue into Jenkins, the user is authenticated and can browse freely. It will happen every time a user needs to be re-authenticated.

       

       

            Assignee:
            Ivan Fernandez Calvo
            Reporter:
            Drew
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            Watchers:
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              Created:
              Updated:
              Resolved: