The 1.22.1 security release changed the visibility of WikiPage's $mPreparedEdit property from public to protected, which breaks Semantic MediaWiki (version 1.8.0.1), which appears to rely on that property being public. The exact error message is: PHP Fatal error: Cannot access protected property WikiPage::$mPreparedEdit in /extensions/SemanticMediaWiki/includes/SMW_ParseData.php on line 477
This is NOT acceptable, since this change has nothing to do with the security issues, which led into the release of a new 1.22.x version. Furthermore, a new WikiPage method called "clearPreparedEdit" was also introduced in the 1.22.1 release -- the documentation says "@since 1.23", which further proves that the WikiPage.php changes don't belong to the 1.22.x branch.
Version: 1.22.1
Severity: major