Wang Jing have disclosed a massive security loopholes on about.com and he had reported the issue on Sunday, Oct 19, 2014 but Jing received no response. Untill now after the public disclosure he had not received any response and all the vulnerability is still unpatched.
"Simultaneously, the About.com main page's search field is vulnerable to XSS attacks too. This means all domains related to About.com are vulnerable to XSS attacks."Because of critical and large scale nature of issue, Jing have made a detailed report and proof-of-concepts video (Shown below) of the vulnerability. He wrote his disclosure on his own blog and also on the security blog.