CVE-2019-11744

MEDIUM

Firefox <69, Thunderbird <68.1, Thunderbird <60.9 - XSS

Title source: llm
STIX 2.1

Description

Some HTML elements, such as &lt;title&gt; and &lt;textarea&gt;, 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.

References (12)

Core 12
Core References
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1562033
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-25/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-27/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-26/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-29/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-30/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4150-1/
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201911-07

Scores

CVSS v3 6.1
EPSS 0.0066
EPSS Percentile 71.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (2)
mozilla/firefox < 60.9
mozilla/thunderbird < 60.9
Published Sep 27, 2019
Tracked Since Feb 18, 2026