CVE-2022-28730: Apache JSPWiki Cross-site scripting vulnerability on AJAXPreview.jsp

[Juan Pablo Santos Rodríguez <juanpablo () apache org>]

Severity: moderate

Description:

A carefully crafted request on AJAXPreview.jsp could trigger an XSS vulnerability on Apache JSPWiki, which could allow 
the attacker to execute javascript in the victim's browser and get some sensitive information about the victim.

This vulnerability leverages CVE-2021-40369, where the Denounce plugin dangerously renders user-supplied URLs. Upon 
re-testing CVE-2021-40369, it appears that the patch was incomplete as it was still possible to insert malicious input 
via the Denounce plugin. 

Mitigation:

Apache JSPWiki users should upgrade to 2.11.3 or later. 

Credit:

This issue was discovered by Poh Jia Hao, from Star Labs <info AT starlabs DOT sg>

References:

https://jspwiki-wiki.apache.org/Wiki.jsp?page=CVE-2022-28732