Remote attackers may delete arbitrary files in a system hosting a JSPWiki instance, versions up to 2.11.0.M8, by using a carefuly crafted http request on logout, given that those files are reachable to the user running the JSPWiki instance. Apache JSPWiki users should upgrade to 2.11.0 or later.
Credits
Apache JSPWiki would like to thank haby0 (forhaby0@gmail.com) from Duxiaoman Financial Security Team for discovering and proposing the fix for this issue.
