Description
Olli Pettay and Boris Zbarsky discovered an issue during anchor
navigations in some circumstances. If a user were tricked in to opening
a specially crafted message with scripting enabled, an attacker could
potentially exploit this to bypass same-origin policy restrictions.
Christoph Kerschbaumer discovered that CORS requests from
navigator.sendBeacon() followed 30x redirections after preflight. If a
user were tricked in to opening a specially crafted message with
scripting enabled, an attacker could potentially exploit this to conduct
cross-site request forgery (XSRF) attacks.