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URLs using "javascript:" have the protocol removed when pasted into the addressbar to protect users from cross-site scripting (XSS) attacks, but if a tab character is embedded in the "javascript:" URL the protocol is not removed and the script will execute. This could allow users to be socially engineered to run an XSS attack against themselves. This vulnerability affects Firefox < 59.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade waterfoxUpgrade libxulUpgrade firefoxUpgrade seamonkeyUpgrade linux-seamonkeyUpgrade linux-firefoxUpgrade firefox-esrUpgrade linux-thunderbirdUpgrade thunderbird | Dec 10, 2025 | Mar 13, 2018 |
| Mfsa2018 06 | — | Upgrade to Mozilla Firefox version 59.0Upgrade to the latest version of Mozilla Firefox | Jul 12, 2018 | Jun 11, 2018 |
| Suse | — | Upgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox | May 19, 2018 | Mar 14, 2018 |
| Ubuntu | — | Upgrade firefox | Apr 26, 2018 | Mar 14, 2018 |
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