Description
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.
Remediation
References
https://github.com/xwiki/xwiki-platform/commit/f9a677408ffb06f309be46ef9d8df1915d9099a4
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-76mp-659p-rw65
https://jira.xwiki.org/browse/XWIKI-17942
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