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https://issues.apache.org/jira/browse/SOLR-14095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16998681#comment-16998681
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Tomas Eduardo Fernandez Lobbe commented on SOLR-14095:
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bq. But is the change backward compatible? 
If setting the appropriate system properties. The recommendation would be to 
upgrade to a more secure format, but as I said, may require more than one phase 
deployment.
bq. we should always stick to JSON wherever possible
+1. I don't love using Javabin here, the main reason I chose it is because it 
can already serialize/deserialize the NamedList properly. Maybe I'm missing the 
way to do that with Json in Solr?

> Remove serialization and/or support serialization filtering
> -----------------------------------------------------------
>
>                 Key: SOLR-14095
>                 URL: https://issues.apache.org/jira/browse/SOLR-14095
>             Project: Solr
>          Issue Type: Task
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Robert Muir
>            Priority: Major
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> Removing the use of serialization is greatly preferred.
> But if serialization over the wire must really happen, then we must use JDK's 
> serialization filtering capability to prevent havoc.
> https://docs.oracle.com/javase/10/core/serialization-filtering1.htm#JSCOR-GUID-3ECB288D-E5BD-4412-892F-E9BB11D4C98A



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