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.
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):