CVE-2019-11741

A compromised sandboxed content process can perform a Universal Cross-site Scripting (UXSS) attack on content from any site it can cause to be loaded in the same process. Because addons.mozilla.org and accounts.firefox.com have close ties to the Firefox product, malicious manipulation of these sites within the browser can potentially be used to modify a user's Firefox configuration. These two sites will now be isolated into their own process and not allowed to be loaded in a standard content process. This vulnerability affects Firefox < 69.

• CWE-79

• https://bugzilla.mozilla.org/show_bug.cgi?id=1539595Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-25/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1539595Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-25/Vendor Advisory

Published

Sep 27, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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• CVE-2019-11736The Mozilla Maintenance Service does not guard against files…7
• CVE-2019-11737If a wildcard ('*') is specified for the host in Content Sec…5.3
• CVE-2019-11738If a Content Security Policy (CSP) directive is defined that…6.3
• CVE-2019-11739Encrypted S/MIME parts in a crafted multipart/alternative me…6.5
• CVE-2019-1174An elevation of privilege vulnerability exists in the way th…7
• CVE-2019-11740Mozilla developers and community members reported memory saf…8.8
• CVE-2019-11742A same-origin policy violation occurs allowing the theft of …6.5
• CVE-2019-11743Navigation events were not fully adhering to the W3C's "Navi…3.7
• CVE-2019-11744Some HTML elements, such as &lt;title&gt; and &lt;textarea&g…6.1
• CVE-2019-11745When encrypting with a block cipher, if a call to NSC_Encryp…8.8
• CVE-2019-11746A use-after-free vulnerability can occur while manipulating …8.8
• CVE-2019-11747The "Forget about this site" feature in the History pane is …6.5