"unsticky" discovered that b2evolution, a blog engine, performs insufficient input sanitising, allowing for cross site scripting.
For the stable distribution (etch), this problem has been fixed in version 0.9.2-3+etch1.
For the unstable distribution (sid), this problem has been fixed in version 0.9.2-4.
We recommend that you upgrade your b2evolution package.
MD5 checksums of the listed files are available in the original advisory.