It was possible to prevent a user from exiting pointerlock when pressing escape and to overlay customValidity notifications from a <select>
element over certain permission prompts. This could be used to confuse a user into giving a site unintended permissions. This vulnerability affects Firefox < 128 and Thunderbird < 128.
{ "availability": "No subscription required", "binaries": [ { "binary_version": "128.0+build2-0ubuntu0.20.04.1", "binary_name": "firefox" }, { "binary_version": "128.0+build2-0ubuntu0.20.04.1", "binary_name": "firefox-dev" }, { "binary_version": "128.0+build2-0ubuntu0.20.04.1", "binary_name": "firefox-geckodriver" }, { "binary_version": "128.0+build2-0ubuntu0.20.04.1", "binary_name": "firefox-mozsymbols" } ] }