XWiki Incorrect Authorization Vulnerability - CVE-2021-32620

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In versions prior to 11.10.13 12.6.7 and 12.10.2 a user disabled on a wiki using email verification for registration canouldre-activate themself by using the activation link provided for his registration. The problem has been patched in the following versions of XWiki: 11.10.13 12.6.7 12.10.2 13.0. It is possible to workaround the issue by resetting the validkey property of the disabled XWiki users. This can be done by editing the user profile with object editor.