Gentoo Linux Security Advisory GLSA 200501-29 – Mailman is vulnerable to cross-site scripting attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/35864/glsa-200501-29.txt
Source: https://packetstormsecurity.com/files/35864/Gentoo-Linux-Security-Advisory-200501-29.html