CVE-2009-1891: Fix a potential Denial-of-Service attack against mod_deflate or other modules.
CVE-2009-1195: Prevent the "Includes" Option from being enabled in an .htaccess file if the AllowOverride restrictions do not permit it.
CVE-2009-1890: Fix a potential Denial-of-Service attack against mod_proxy in a reverse proxy configuration.
CVE-2009-1191: mod_proxy_ajp: Avoid delivering content from a previous request which failed to send a request body.
CVE-2009-0023, CVE-2009-1955, CVE-2009-1956: The bundled copy of the APR-util library has been updated, fixing three different security issues which may affect particular configurations and third-party modules (was already fixed in 2.2.11_5).