The cross-site scripting flaw in the mobile version of Google's messaging and-social networking application was put right soon after it was reported, the company said in a statement on Wednesday.
"We fixed a vulnerability that could have affected users of Google Buzz for mobile on 16 February, hours after it was reported to us," Google said. "We have no indication that the vulnerability was actively abused. We understand the importance of our users' security, and we are committed to further improving the security of Google Buzz."
A source close to Google said the flaw would not have allowed an outsider access to Gmail or Google Docs.
For more on this story, read Google Buzz gets security fix on ZDNet UK.