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https://issues.apache.org/jira/browse/SLING-8711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16935052#comment-16935052
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Carsten Ziegeler commented on SLING-8711:
-----------------------------------------

[~enorman] These were some AEM internal tests and we have many of them and its 
now hard to find out the exact one that failed. But regardless, isn't this up 
to the auth handler to make sure to return the user on a failed login. So an 
auth handler might not return it 

> NPE when auth failed event is sent
> ----------------------------------
>
>                 Key: SLING-8711
>                 URL: https://issues.apache.org/jira/browse/SLING-8711
>             Project: Sling
>          Issue Type: Bug
>          Components: Authentication
>    Affects Versions: Auth Core 1.4.4
>            Reporter: Carsten Ziegeler
>            Assignee: Carsten Ziegeler
>            Priority: Blocker
>             Fix For: Auth Core 1.4.6
>
>
> Some auth info might be null when the authentication failed which then 
> results in an NPE when sending the event:
> java.lang.NullPointerException
>       at java.util.Hashtable.put(Hashtable.java:460)
>       at 
> org.apache.sling.auth.core.impl.SlingAuthenticator.postLoginFailedEvent(SlingAuthenticator.java:1541)
>       at 
> org.apache.sling.auth.core.impl.SlingAuthenticator.getResolver(SlingAuthenticator.java:840)
>       at 
> org.apache.sling.auth.core.impl.SlingAuthenticator.doHandleSecurity(SlingAuthenticator.java:518)
>       at 
> org.apache.sling.auth.core.impl.SlingAuthenticator.handleSecurity(SlingAuthenticator.java:462)



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