WebExtensions with the "ActiveTab" permission are able to access frames hosted within the active tab even if the frames are cross-origin. Malicious extensions can inject frames from arbitrary origins into the loaded page and then interact with them, bypassing same-origin user expectations with this permission. This vulnerability affects Firefox < 58.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade libxulUpgrade linux-thunderbirdUpgrade waterfoxUpgrade thunderbirdUpgrade seamonkeyUpgrade linux-firefoxUpgrade firefoxUpgrade linux-seamonkeyUpgrade firefox-esr | Dec 10, 2025 | Jan 23, 2018 |
| Mfsa2018 02 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 58.0 | Jan 24, 2018 | Jan 23, 2018 |
| Suse | — | Upgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox | May 20, 2018 | Jan 24, 2018 |
| Ubuntu | — | Upgrade firefox | Apr 26, 2018 | Jan 24, 2018 |
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