Under certain conditions, Firefox did not display a warning when a user attempted to navigate to a new protocol handler. This vulnerability affects Firefox < 121.
{ "binaries": [ { "binary_name": "firefox", "binary_version": "121.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "firefox-dev", "binary_version": "121.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "firefox-geckodriver", "binary_version": "121.0+build1-0ubuntu0.20.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "121.0+build1-0ubuntu0.20.04.1" } ], "availability": "No subscription required" }