Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that string; resulting in an information leak. Note: This issue only affected Windows operating systems. Other operating systems are unaffected.. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
| Software | From | Fixed in |
|---|---|---|
| mozilla / firefox | - | 83.0 |
| mozilla / firefox_esr | - | 78.5 |
| mozilla / thunderbird | - | 78.5 |