mod_python version 2.7.6 and earlier allows a module indirectly imported by a published module to then be accessed via the publisher, which allows remote attackers to call possibly dangerous functions from the imported module.
distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000477
www.iss.net/security_center/static/8997.php
www.modpython.org/pipermail/mod_python/2002-April/001991.html
www.modpython.org/pipermail/mod_python/2002-April/002003.html
www.redhat.com/support/errata/RHSA-2002-070.html
www.securityfocus.com/bid/4656