Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
CVSS Details
- CVSS 3.1 Base Score: 6.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefoxUpgrade firefox-esrUpgrade thunderbirdUpgrade librewolf | Aug 22, 2024 | Oct 1, 2020 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade thunderbird-debuginfo | Dec 10, 2020 | Oct 1, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Oct 1, 2020 |
| Centos_linux | — | Upgrade thunderbird-debugsourceUpgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-debugsource | Sep 25, 2020 | Sep 24, 2020 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Sep 30, 2020 | Sep 30, 2020 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird. | Oct 19, 2020 | Oct 1, 2020 |
| Mfsa2020 42 | — | Upgrade to Mozilla Firefox version 81.0Upgrade to the latest version of Mozilla Firefox | Sep 23, 2020 | Sep 22, 2020 |
| Mfsa2020 43 | — | Upgrade to Mozilla Firefox ESR version 78.3Upgrade to the latest version of Mozilla Firefox | Sep 23, 2020 | Sep 22, 2020 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 78.3 | Sep 25, 2020 | Sep 22, 2020 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 78.3.0-11.4.27.0.1.82.0 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 78.3.0-11.4.27.0.1.82.0 on Solaris 11.4Upgrade mail/thunderbird to version 78.3.0-11.4.27.0.1.82.0 on Solaris 11.4 | Jan 19, 2021 | Oct 1, 2020 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Sep 25, 2020 | Sep 22, 2020 |
| Redhat_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoNo solution existsUpgrade firefox-debugsourceUpgrade firefox-debuginfo | Sep 25, 2020 | Sep 24, 2020 |
| Suse | — | Upgrade MozillaThunderbird-translations-otherUpgrade mozilla-nsprUpgrade mozilla-nspr-32bitUpgrade MozillaFirefox-develUpgrade MozillaThunderbirdUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-commonUpgrade mozillafirefox-buildsymbolsUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbird-translations-commonUpgrade mozilla-nspr-develUpgrade MozillaFirefox-translations-other | Sep 29, 2020 | Sep 24, 2020 |
| Ubuntu | — | Upgrade firefox | Sep 29, 2020 | Sep 24, 2020 |
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