Jakub Palaczynski discovered that websvn, a web viewer for Subversion
repositories, does not correctly sanitize user-supplied input, which
allows a remote user to run reflected cross-site scripting attacks.
For the oldstable distribution (wheezy), this problem has been fixed
in version 2.3.3-1.1+deb7u2.
For the stable distribution (jessie), this problem has been fixed in
version 2.3.3-1.2+deb8u1.
We recommend that you upgrade your websvn packages.