WordPress Plugin freetobook widget is prone to an unspecified vulnerability. No available information exists regarding this issue and it's impact on a vulnerable website. WordPress Plugin freetobook widget version 1.0.5 is vulnerable; prior versions may also be affected.
Update to plugin version 1.0.6 or latest
WordPress Plugin The Official Facebook Chat Security Bypass (1.5)
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Apache Tomcat version older than 6.0.6