CVE-2022-23500

TYPO3 is an open source PHP based web content management system. In
versions prior to 9.5.38, 10.4.33, 11.5.20, and 12.1.1, requesting invalid
or non-existing resources via HTTP triggers the page error handler, which
again could retrieve content to be shown as an error message from another
page. This leads to a scenario in which the application is calling itself
recursively - amplifying the impact of the initial attack until the limits
of the web server are exceeded. This vulnerability is very similar, but not
identical, to the one described in CVE-2021-21359. This issue is patched in
versions 9.5.38 ELTS, 10.4.33, 11.5.20 or 12.1.1.