A vulnerability has been reported in Bugzilla, which can be exploited by malicious users to conduct cross-site scripting attacks.
Input passed to certain fields (e.g. the realname field) is not properly sanitised before being used to generate Atom feeds. This can be exploited to execute arbitrary HTML and script code in a user's atom feed reader in context of an affected site.
The vulnerability is reported in versions prior to 2.20.4, 2.22.2, and 2.23.4.
Solution: Update to version 2.20.4, 2.22.2, or 2.23.4
Provided and/or discovered by: Olav Vitters
Original Advisory: http://www.bugzilla.org/security/2.20.3/
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