Some HTML elements, such as <title> and <textarea>, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to .innerHTML on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.
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 firefox-esrUpgrade firefox | Nov 8, 2019 | Sep 27, 2019 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade thunderbird-debuginfo | Apr 27, 2020 | Sep 27, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Sep 27, 2019 |
| Centos_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox | Sep 5, 2019 | Sep 4, 2019 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Sep 9, 2019 | Sep 9, 2019 |
| Freebsd | — | Upgrade thunderbirdUpgrade libxulUpgrade linux-thunderbirdUpgrade firefoxUpgrade linux-seamonkeyUpgrade firefox-esrUpgrade seamonkeyUpgrade waterfoxUpgrade linux-firefox | Sep 4, 2019 | Sep 3, 2019 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | Nov 25, 2019 | Sep 27, 2019 |
| Mfsa2019 25 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 69.0 | Sep 4, 2019 | Sep 3, 2019 |
| Mfsa2019 26 | — | Upgrade to Mozilla Firefox ESR version 68.1Upgrade to the latest version of Mozilla Firefox | Sep 4, 2019 | Sep 3, 2019 |
| Mfsa2019 27 | — | Upgrade to Mozilla Firefox ESR version 60.9Upgrade to the latest version of Mozilla Firefox | Sep 4, 2019 | Sep 3, 2019 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 68.1Upgrade to the latest version of Mozilla Thunderbird | Sep 16, 2021 | Sep 27, 2019 |
| Oracle Solaris | — | Upgrade web/data/firefox-bookmarks to version 60.9.0-11.4.14.0.1.2.0 on Solaris 11.4Upgrade web/browser/firefox to version 60.9.0-11.4.14.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 60.9.0-11.4.14.0.1.3.0 on Solaris 11.4Upgrade mail/thunderbird to version 60.9.0-11.4.14.0.1.3.0 on Solaris 11.4 | Oct 16, 2019 | Sep 27, 2019 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Sep 11, 2019 | Sep 3, 2019 |
| Redhat_linux | — | Upgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoNo solution existsUpgrade thunderbirdUpgrade firefox | Sep 5, 2019 | Sep 4, 2019 |
| Suse | — | Upgrade mozilla-nspr-32bitUpgrade mozilla-nspr-develUpgrade mozilla-nss-toolsUpgrade firefox-gtk3-immodule-inuktitutUpgrade firefox-gtk3-branding-upstreamUpgrade enigmailUpgrade mozilla-nssUpgrade firefox-glib2-langUpgrade firefox-gtk3-immodule-thaiUpgrade MozillaFirefox-develUpgrade firefox-libgtk-3-0Upgrade mozilla-nsprUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-translations-otherUpgrade firefox-libharfbuzz0Upgrade MozillaFirefox-translations-commonUpgrade libsoftokn3Upgrade libfreebl3Upgrade libfirefox-gthread-2_0-0Upgrade libsoftokn3-32bitUpgrade firefox-gtk3-immodule-vietnameseUpgrade MozillaThunderbird-buildsymbolsUpgrade firefox-gtk3-dataUpgrade firefox-gtk3-immodule-multipressUpgrade firefox-gtk3-immodules-tigrignaUpgrade mozillafirefox-branding-sleUpgrade MozillaFirefox-translations-otherUpgrade firefox-gdk-pixbuf-langUpgrade mozillafirefox-buildsymbolsUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-branding-SLEDUpgrade firefox-gtk3-immodule-amharicUpgrade firefox-libffi7Upgrade firefox-gtk3-immodule-ximUpgrade firefox-libatk-1_0-0Upgrade firefox-gtk3-toolsUpgrade mozilla-nss-certsUpgrade libfirefox-glib-2_0-0Upgrade firefox-libpango-1_0-0Upgrade firefox-gio-branding-upstreamUpgrade libfreebl3-32bitUpgrade firefox-libcairo-gobject2Upgrade firefox-glib2-toolsUpgrade firefox-gtk3-langUpgrade libfirefox-gobject-2_0-0Upgrade MozillaFirefoxUpgrade firefox-libffi4Upgrade mozillafirefox-branding-upstreamUpgrade mozilla-nss-certs-32bitUpgrade firefox-atk-langUpgrade firefox-gdk-pixbuf-query-loadersUpgrade firefox-libcairo2Upgrade mozilla-nss-32bitUpgrade firefox-libgdk_pixbuf-2_0-0Upgrade firefox-gdk-pixbuf-thumbnailerUpgrade libfirefox-gio-2_0-0Upgrade mozilla-nss-develUpgrade libfirefox-gmodule-2_0-0 | Sep 18, 2019 | Sep 3, 2019 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Sep 5, 2019 | Sep 3, 2019 |
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