An undocumented extension for the Servlet mappings in the Servlet 2.3 specification, when upgrading to WebLogic Server and Express 7.0 Service Pack 1 from BEA WebLogic Server and Express 6.0 through 7.0.0.1, does not prepend a "/" character in certain URL patterns, which prevents the proper enforcement of role mappings and policies in applications that use the extension.

Race condition in Performance Pack in BEA WebLogic Server and Express 5.1.x, 6.0.x, 6.1.x and 7.0 allows remote attackers to cause a denial of service (crash) via a flood of data and connections.