Ulf Härnhammar from the Debian Security Audit Project discovered a cross-site scripting problem in mailreader, a simple, but powerful WWW mail reader system, when displaying messages of the MIME types text/enriched or text/richtext.
For the stable distribution (woody) this problem has been fixed in version 2.3.29-5woody2.
For the unstable distribution (sid) this problem has been fixed in version 2.3.29-11.
We recommend that you upgrade your mailreader package.
MD5 checksums of the listed files are available in the original advisory.