Summary It is possible to bypass the default REST API security and access the index page. Details The REST API security handles rest and its subpaths but not rest with an extension (e.g., rest.html). Impact The REST API index can disclose whether certain extensions are installed. Workaround In ${GEOSERVER_DATA_DIR}/security/config.xml, change the paths for the rest filter to /rest.*,/rest/** and change the paths for the gwc filter to /gwc/rest.*,/gwc/rest/** and restart GeoServer. References https://osgeo-org.atlassian.net/browse/GEOS-11664 https://osgeo-org.atlassian.net/browse/GEOS-11776…Read More