Adjective : a credulous rumor.    From Dictionary.com. 

Either he sought to deceive the gullible, or, as is more likely, was himself overcredulous.    From Wordnik.com.  [The Mistakes of Jesus] Reference

Contradictory circumstances he had noted intruded, uninvited, to challenge overcredulous conclusions concerning her.    From Wordnik.com.  [The False Faces Further Adventures from the History of the Lone Wolf] Reference

Serveral hundred overcredulous tech journalists, Warren Ellis, assorted furries, trannies, and S&M enthusiasts and him off of Boing Boing.    From Wordnik.com.  [How Now Brownpau] Reference