OneNav beta 0.9.12 allows XSS via the Add Link feature. NOTE: the vendor's position is that there intentionally is not any XSS protection at present, because the attack risk is largely limited to a compromised account; however, XSS protection is planned for a future release.
https://github.com/helloxz/onenav/releases
https://github.com/helloxz/onenav/issues/26
http://packetstormsecurity.com/files/163753/OneNav-Beta-0.9.12-Cross-Site-Scripting.html