Multiple cross-site request forgery (CSRF) vulnerabilities in Bugzilla before 3.2.10, 3.4.x before 3.4.10, 3.6.x before 3.6.4, and 4.0.x before 4.0rc2 allow remote attackers to hijack the authentication of arbitrary users for requests related to (1) adding a saved search in buglist.cgi, (2) voting in votes.cgi, (3) sanity checking in sanitycheck.cgi, (4) creating or editing a chart in chart.cgi, (5) column changing in colchange.cgi, and (6) adding, deleting, or approving a quip in quips.cgi.
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.