mod_access.c in lighttpd 1.4.15 ignores trailing / (slash) characters in the URL, which allows remote attackers to bypass url.access-deny settings.
http://www.vupen.com/english/advisories/2007/2585
http://www.securityfocus.com/bid/24967
http://www.securityfocus.com/archive/1/474131/100/0/threaded
http://www.novell.com/linux/security/advisories/2007_15_sr.html
http://www.lighttpd.net/2007/7/24/1-4-16-let-s-ship-it
http://www.debian.org/security/2007/dsa-1362
http://trac.lighttpd.net/trac/ticket/1230
http://trac.lighttpd.net/trac/changeset/1871
http://security.gentoo.org/glsa/glsa-200708-11.xml
http://secunia.com/advisories/26593
http://secunia.com/advisories/26505
http://secunia.com/advisories/26158