[jira] [Updated] (LANG-757) StringEscapeUtils.unescapeHtml: handle HTML escapes without semicolon

[Henri Yandell (JIRA)]

     [ 
https://issues.apache.org/jira/browse/LANG-757?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Henri Yandell updated LANG-757:
-------------------------------

    Fix Version/s: Discussion

> StringEscapeUtils.unescapeHtml: handle HTML escapes without semicolon
> ---------------------------------------------------------------------
>
>                 Key: LANG-757
>                 URL: https://issues.apache.org/jira/browse/LANG-757
>             Project: Commons Lang
>          Issue Type: Improvement
>          Components: lang.*
>            Reporter: Steve Hale
>            Priority: Minor
>             Fix For: Discussion
>
>         Attachments: commons-lang3-LANG-757.patch
>
>
> org.apache.commons.lang.StringEscapeUtils.unescapeHtml is useful in detecting 
> and correcting Cross-Site Scripting (XSS) attempts by converting escaped 
> chars like &# 60; or & lt; (remove spaces) into normal chars like < so 
> patterns like HTML tags can be detected.  Many browsers will allow variations 
> without semicolons, particularly the long UTF-8 encoding like &#0000060.  
> Please see: http://ha.ckers.org/xss.html
> Since this may not be standard HTML, maybe adding a boolean bLenient 
> parameter to the method could allow better backward compatibility.



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