Updated Mailman packages are now available for Red Hat PowerTools 7 and 7.1. These updates fix cross-site scripting bugs which might allow another server to be used to gain a user's private information from a server running Mailman.
A server running Mailmain versions prior to 2.0.8 will send certain user-modifiable data to clients without escaping embedded tags. This data may contain scripts which will then be executed by an unwary client, possibly transmitting private information to a third party. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2001-0884 to this issue.
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