In a Maven Web App, the dependencies that are added to the POM when using the Frameworks pane in the Project Properties window to add a framework (eg Spring) are incorrect/malformed.

Dependencies that are added directly from the Maven Repositories node in the Services window (right-click > Add as Dependency) add the dependency to the POM correctly.

Some examples of dependencies that are added to the POM:
       <dependency>
            <groupId>unknown.binary</groupId>
            <artifactId>spring-websocket-4.0.1.RELEASE</artifactId>
            <version>SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>unknown.binary</groupId>
            <artifactId>hibernate-jpa-2.0-api-1.0.1.Final</artifactId>
            <version>SNAPSHOT</version>
        </dependency>