Mozilla security researcher moz_bug_r_a4 reported
a series of vulnerabilities in which objects that normally receive
a XPCCrossOriginWrapper
are constructed without the
wrapper. This can lead to cases where JavaScript from one website may
unsafely access properties of such an object which had been set by a
different website. A malicious website could use this vulnerability
to launch a XSS attack and run arbitrary JavaScript within the context
of another site.
Disable JavaScript until a version containing this fix can be installed.