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https://issues.apache.org/jira/browse/WW-5022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16772708#comment-16772708
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Yasser Zamani commented on WW-5022:
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What is the philosophy that auto-escaping is a critical need?! If there aren't,
and as it looks like a huge behavioral change, then let disable auto-escaping.
I myself, as a user/developer, prefer flexibility against security - I myself
should care!
> Struts 2.6 escaping behaviour change for s:a (anchor) tag
> ---------------------------------------------------------
>
> Key: WW-5022
> URL: https://issues.apache.org/jira/browse/WW-5022
> Project: Struts 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.6
> Environment: Tomcat 7.0, 8.5 using Java 8 and 11.
> Reporter: James Chaplin
> Priority: Major
> Fix For: 2.6
>
>
> While interacting with the current 2.6 Showcase application I recently
> noticed that+ the "Home" glyph icon was not displaying correctly+. Instead
> of the icon, +the page displayed the body content literally in the browser+.
> Checking the page source (view source in browser) it turns out the body
> content of the tag was HTML-escaped. I double-checked and this does not
> happen to Struts 2.5.21 (snapshot) or older 2.6 Showcase apps.
> This behaviour might affect other tags, but +it was noticed and confirmed
> with "s:a"+ (the JSP anchor tag).
> After some digging (using older commits from GitHub and building the 2.6
> Showcase app from them) it appears the automatic body escaping did not occur
> prior to January 2nd 2019, but was introduced with one of the multiple
> commits applied on January 3rd 2019.
> It could be an interaction between earlier mid-December 2018 commits that
> changed the Freemarker configuration version in FreemarkerManager
> (Configuration.VERSION_2_3_0) to a new one (Configuration.VERSION_2_3_28),
> combined with the January 3rd commits. Couldn't find the exact cause, but
> perhaps one of the Struts Team might be able to do so.
> Given the original/old behaviour +it seems that auto-escaping the tag body
> might be a bug+.
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