The Quarterly Threat Landscape Report is out. See what attackers are targeting now.Read report
WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions. This vulnerability affects Firefox < 64.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Feb 28, 2019 |
| Freebsd | — | Upgrade linux-seamonkeyUpgrade waterfoxUpgrade linux-thunderbirdUpgrade firefox-esrUpgrade linux-firefoxUpgrade seamonkeyUpgrade libxulUpgrade firefoxUpgrade thunderbird | Dec 12, 2018 | Dec 11, 2018 |
| Mfsa2018 29 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 64.0 | Dec 12, 2018 | Dec 11, 2018 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 28, 2019 |
| Ubuntu | — | Upgrade firefox | Jan 10, 2019 | Dec 11, 2018 |
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