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If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-esr | Mar 24, 2020 | Mar 2, 2020 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Apr 27, 2020 | Mar 2, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Mar 2, 2020 |
| Centos_linux | — | Upgrade firefox-debugsourceUpgrade firefoxUpgrade thunderbird-debugsourceUpgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | Feb 18, 2020 | Feb 17, 2020 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Feb 14, 2020 | Feb 14, 2020 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox. | Mar 13, 2020 | Mar 2, 2020 |
| Mfsa2020 05 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 73.0 | Feb 12, 2020 | Feb 11, 2020 |
| Mfsa2020 06 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 68.5 | Mar 11, 2020 | Mar 2, 2020 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 68.5Upgrade to the latest version of Mozilla Thunderbird | Feb 12, 2020 | Feb 11, 2020 |
| Oracle Solaris | — | Upgrade web/data/firefox-bookmarks to version 68.5.0-11.4.19.0.1.2.0 on Solaris 11.4Upgrade web/browser/firefox to version 68.5.0-11.4.19.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 68.5.0-11.4.19.0.1.2.0 on Solaris 11.4Upgrade mail/thunderbird to version 68.5.0-11.4.19.0.1.2.0 on Solaris 11.4 | Jan 19, 2021 | Mar 2, 2020 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Mar 2, 2020 | Feb 11, 2020 |
| Redhat_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debugsourceNo solution existsUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade thunderbirdUpgrade firefox | Feb 18, 2020 | Feb 17, 2020 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbirdUpgrade mozillafirefox-buildsymbolsUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbird-translations-other | Feb 18, 2020 | Feb 13, 2020 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Feb 14, 2020 | Feb 13, 2020 |
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