A security issue has been found in Firefox versions prior to 63.0, where if a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content warning is not displayed to users.
A security issue has been found in Firefox versions prior to 63.0, where if a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content warning is not displayed to users.
https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12403 https://bugzilla.mozilla.org/show_bug.cgi?id=1484753