When protecting CSS blocks with the nonce feature of Content Security Policy, the @import statement in the CSS block could allow an attacker to inject arbitrary styles, bypassing the intent of the Content Security Policy. This vulnerability affects Firefox < 74.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 | Mar 25, 2020 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Mar 25, 2020 | |
| Mfsa2020 08 | mozilla-firefox-upgrade-74_0 | Mar 11, 2020 | Mar 10, 2020 | |
| Redhat_linux | no-fix-redhat-rpm-package | Jul 9, 2025 | Mar 25, 2020 | |
| Ubuntu | ubuntu-upgrade-firefox | Mar 12, 2020 | Mar 11, 2020 |
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