XWiki Platform Web Templates vulnerable to Unauthorized User Registration Through the Distribution Wizard

Summary

XWiki Platform Web Templates are templates for XWiki Platform, a generic wiki platform. By passing a template of the distribution wizard to the xpart template, user accounts can be created even when user registration is disabled. This also circumvents any email verification. Before versions 14.2 and 13.10.4, this can also be exploited on a private wiki, thus potentially giving the attacker access to the wiki. Depending on the configured default rights of users, this could also give attackers write access to an otherwise read-only public wiki. Users can also be created when an external authentication system like LDAP is configured, but authentication fails unless the authentication system supports a bypass/local accounts are enabled in addition to the external authentication system. This issue has been patched in XWiki 13.10.5 and 14.3RC1. As a workaround, one may replace `xpart.vm`, the entry point for this attack, by a patched version from the patch without updating XWiki.

Timeline

1. Sep 8, 2022, 5:25 PM UTCCVE published
2. Apr 23, 2025, 2:01 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Apr 23, 2025, 5:13 PM UTCRecord last updated

Affected versions

• xwiki xwiki-platform

  From 8.0-rc-1 · fixed in 13.10.5; From 14.0 · fixed in 14.3-rc-1

• org.xwiki.platform:xwiki-platform-web-templatesMaven

  fixed in 13.10.5

• org.xwiki.platform:xwiki-platform-webMaven

  From 8.0-rc-1 · fixed in 13.10.5

• org.xwiki.platform:xwiki-platform-web-templatesMaven

  From 14.0 · fixed in 14.3-rc-1

• org.xwiki.platform:xwiki-platform-webMaven

  From 14.0 · fixed in 14.3-rc-1

References 3