Mozilla Firefox has an unspecified vulnerability (CNVD-2021-101166)

Mozilla Firefox is an open source web browser from the Mozilla Foundation in the U.S. A security vulnerability exists in Mozilla Firefox, which stems from the fact that by displaying form validity messages in the correct location, as well as permission prompts (such as geolocation), the validity messages may obscure the prompts, leading to the possibility of users being tricked into granting permissions. No details of the vulnerability are currently available.