prettyPhoto DOM based XSS

prettyPhoto DOM XSS on Saton.org

prettyPhoto DOM based XSS on Saotn.org… This evening, after tweeting about preventing cross site scripting vulnerabilities, I received a reply from Olivier Beg. His reply to my tweet contained an image, as you can see above. He alerted me that Saotn.org was vulnerable to a DOM based XSS vulnerability, hidden in prettyPhoto used by my WordPress theme. Whoops! So, I had work to do! But, what is prettyPhoto and what exactly is a DOM based XSS?

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