The WikiManager REST API allows any user to create wikis
Maven org.xwiki.platform:xwiki-platform-wiki-rest-default · Upgrade to 16.10.0, 16.4.6 or 15.10.15 by release line · >= 5.4-rc-1, < 15.10.15; >= 16.0.0-rc-1, < 16.4.6; >= 16.5.0-rc-1, < 16.10.0 · CVE-2025-29926 · GHSA-gfp2-6qhm-7x43