Konqueror in KDE 3.1.3 and earlier (kdelibs) allows remote attackers to bypass intended cookie access restrictions on a web application via "%2e%2e" (encoded dot dot) directory traversal sequences in a URL, which causes Konqueror to send the cookie outside the specified URL subsets, e.g. to a vulnerable application that runs on the same server as the target application.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A823
http://www.redhat.com/support/errata/RHSA-2004-074.html
http://www.mandriva.com/security/advisories?name=MDKSA-2004:022
http://www.debian.org/security/2004/dsa-459
http://lists.grok.org.uk/pipermail/full-disclosure/2004-March/018475.html