A compromised content process could have performed session history manipulations it should not have been able to due to testing infrastructure that was not restricted to testing-only configurations. This vulnerability affects Firefox < 88.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade librewolfUpgrade firefox | Aug 22, 2024 | Jun 24, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 24, 2021 |
| Mfsa2021 16 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 88.0 | Apr 20, 2021 | Apr 19, 2021 |
| Ubuntu | — | Upgrade firefox | Apr 27, 2021 | Apr 26, 2021 |
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