ANSWER:

No, there is currently no central authority on plugins—there isn’t even a complete test suite for HTML5 standards—nor is there likely to be one anytime soon.

There a few things you can do to help keep you browsing safely:

• Use/install as few plugins as needed
• Disable as many installed plugins as possible, re-enabling the ones you need when needed
• Update them frequently (much easier to do when only a few are installed)

Here are a few options for tracking plugins (note that they can only detect enabled plugins, so any outdated plugins you have installed that are disabled will not be detected):

• Plugin Check & Updates
• Browser Plugin Check
• There was also a Chrome extension, but it seems to be missing

by Synetech from http://superuser.com/questions/429252