By navigating a tab using the history API, an attacker could cause the address bar to display the incorrect domain (with the https:// scheme, a blocked port number such as '1', and without a lock icon) while controlling the page contents. This vulnerability affects Firefox < 70. References: https://www.mozilla.org/security/advisories/mfsa2019-34/
Statement: This vulnerability was reported in Firefox 70 mainline; ESR versions were not affected.
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-12412