Jamie Strandboge discovered that moin, a python clone of WikiWiki, does not sufficiently sanitize the page name in "Despam" action, allowing remote attackers to perform cross-site scripting (XSS) attacks.
In addition, this update fixes a minor issue in the "textcha" protection, it could be trivially bypassed by blanking the "textcha-question" and "textcha-answer" form fields.
For the stable distribution (lenny), these problems have been fixed in version 1.7.1-3+lenny4.
For the testing (squeeze) and unstable (sid) distribution, these problems will be fixed soon.
We recommend that you upgrade your moin package.