Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to remain on the page. This could have resulted in an incorrect URL being shown when used in conjunction with other unexpected browser behaviors. This vulnerability affects Firefox < 80.
CVSS Details
- CVSS 3.1 Base Score: 4.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-firefoxalpine-linux-upgrade-librewolf | Aug 22, 2024 | Oct 1, 2020 | |
| Mfsa2020 36 | mozilla-firefox-upgrade-80_0 | Aug 26, 2020 | Aug 25, 2020 | |
| Redhat_linux | — | no-fix-redhat-rpm-package | Jul 9, 2025 | Oct 1, 2020 |
| Ubuntu | ubuntu-upgrade-firefox | Aug 27, 2020 | Aug 26, 2020 |
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