HBX Networks, a Unix community group, discovered the bug while testing a Perl script intended to automate sending batches of newsletters. Messages sent to the group's own e-mail address contained HTML code in the "Reply To" field, and this code turned out to be the message body of other users' e-mail messages.More details at InfoWorld
The problem appears to be caused by a missing ">" character in the formatting of the "From" fields generated by the group's Perl script. "This, apparently, was enough to get GMail to provide us with some portion of someone else's messages," HBX members wrote in their analysis on Wednesday.
Google patches Gmail bug
Posted on Thursday, Jan 13 2005 @ 19:13 CET by Thomas De Maesschalck
Google has patched a bug in its Gmail service, that allowed users to read contents of other people's e-mails.