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https://issues.apache.org/jira/browse/LANG-572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12792907#action_12792907
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Henri Yandell commented on LANG-572:
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Even in 2.4 this could easily be:
<input type='text' name='input'
value='<%=StringEscapeUtils.escapeHtml(request.getParameter("input")).replaceAll("'",
"\\'")%>'>
> [XSS] StringEscapeUtils.escapeHtml() must escape ' chars to '
> ------------------------------------------------------------------
>
> Key: LANG-572
> URL: https://issues.apache.org/jira/browse/LANG-572
> Project: Commons Lang
> Issue Type: Improvement
> Components: lang.*
> Affects Versions: 2.4
> Environment: Operating System: All
> Platform: All
> Reporter: Keisuke Kato
> Priority: Minor
>
> If developers putting untrusted data into attribute values using the single
> quote character ' and StringEscapeUtils.escapeHtml() like:
> <input type='text' name='input'
> value=*'<%=StringEscapeUtils.escapeHtml(request.getParameter("input"))%>'*>
> Then, the attacker is able to break out of the HTML attribute context like:
> hxxp://example.org/?input=*' onfocus='alert(document.cookie);' id='*
> <input type='text' name='input'
> value='*'onfocus='alert(document.cookie);'id='*'>
> I think [LANG\-122|https://issues.apache.org/jira/browse/LANG-122] is not
> truly fixed from this aspect (XSS).
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