GHSA-3989-4C6X-725F XWiki Platform vulnerable to privilege escalation from view right on XWiki.AttachmentSelector

Impact Any user with view rights on XWiki.AttachmentSelector can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping in the "Cancel and return to page" button. This page is installed by default. See...