It was discovered that ejabberd, a distributed, fault-tolerant Jabber/XMPP server, does not sufficiently sanitise MUC logs, allowing remote attackers to perform cross-site scripting (XSS) attacks.
The oldstable distribution (etch) is not affected by this issue.
For the stable distribution (lenny), this problem has been fixed in version 2.0.1-6+lenny1.
For the testing distribution (squeeze), this problem will be fixed soon.
For the unstable distribution (sid), this problem has been fixed in version 2.0.5-1.
We recommend that you upgrade your ejabberd packages.
MD5 checksums of the listed files are available in the original advisory.