firefox is vulnerable to cross-site scripting (XSS). Incorrect parsing of template tag allows a remote attacker to inject and execute arbitrary Javascript in a user’s browser.
access.redhat.com/errata/RHSA-2020:0519
access.redhat.com/security/updates/classification/#important
bugzilla.mozilla.org/show_bug.cgi?id=1602944
security.gentoo.org/glsa/202003-02
security.gentoo.org/glsa/202003-10
usn.ubuntu.com/4278-2/
www.mozilla.org/security/advisories/mfsa2020-05/
www.mozilla.org/security/advisories/mfsa2020-06/
www.mozilla.org/security/advisories/mfsa2020-07/