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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade librewolfUpgrade firefox | Aug 22, 2024 | Mar 25, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Mar 25, 2020 |
| Mfsa2020 08 | — | Upgrade to Mozilla Firefox version 74.0Upgrade to the latest version of Mozilla Firefox | Mar 11, 2020 | Mar 10, 2020 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 25, 2020 |
| Ubuntu | — | Upgrade firefox | Mar 12, 2020 | Mar 11, 2020 |
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