Mozilla Firefox is vulnerable to same-origin policy violation. The vulnerability exists due to an error in how same-origin policy which allows an attacker to data theft.
lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
access.redhat.com/errata/RHSA-2019:2694
access.redhat.com/security/updates/classification/#critical
bugzilla.mozilla.org/show_bug.cgi?id=1559715
usn.ubuntu.com/4150-1/
www.mozilla.org/en-US/security/advisories/mfsa2019-27/
www.mozilla.org/security/advisories/mfsa2019-25/
www.mozilla.org/security/advisories/mfsa2019-26/
www.mozilla.org/security/advisories/mfsa2019-27/
www.mozilla.org/security/advisories/mfsa2019-29/
www.mozilla.org/security/advisories/mfsa2019-30/