An ambiguous file picker design could have confused users who intended to select and upload a single file into uploading a whole directory. This was addressed by adding a new prompt. This vulnerability affects Firefox < 85.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-firefoxalpine-linux-upgrade-librewolf | Aug 22, 2024 | Feb 26, 2021 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Feb 26, 2021 | |
| Gentoo Linux | gentoo-linux-upgrade-www-client-firefoxgentoo-linux-upgrade-www-client-firefox-bin | Feb 1, 2021 | Feb 1, 2021 | |
| Mfsa2021 03 | mozilla-firefox-upgrade-85_0 | Jan 27, 2021 | Jan 26, 2021 | |
| Ubuntu | ubuntu-upgrade-firefox | Feb 2, 2021 | Feb 1, 2021 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub