When arbitrary text is sent over an FTP connection and a page reload is initiated, it is possible to create a modal alert message with this text as the content. This could potentially be used for social engineering attacks. This vulnerability affects Firefox < 66.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Apr 26, 2019 |
| Freebsd | — | Upgrade libxulUpgrade seamonkeyUpgrade waterfoxUpgrade linux-firefoxUpgrade thunderbirdUpgrade linux-seamonkeyUpgrade linux-thunderbirdUpgrade firefox-esrUpgrade firefox | Mar 20, 2019 | Mar 19, 2019 |
| Mfsa2019 07 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 66.0 | Mar 20, 2019 | Mar 19, 2019 |
| Ubuntu | — | Upgrade firefox | Apr 1, 2019 | Mar 19, 2019 |
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