CVE-2018-5133

If the "app.support.baseURL" preference is changed by a malicious local program to contain HTML and script content, this content is not sanitized. It will be executed if a user loads "chrome://browser/content/preferences/in-content/preferences.xul" directly in a tab and executes a search. This stored preference is also executed whenever an EME video player plugin displays a CDM-disabled message as a notification message. This vulnerability affects Firefox < 59.

• CWE-200

• http://www.securityfocus.com/bid/103386Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1040514Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1430511Permissions Required
• https://bugzilla.mozilla.org/show_bug.cgi?id=1430974Permissions Required
• https://usn.ubuntu.com/3596-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2018-06/Vendor Advisory
• http://www.securityfocus.com/bid/103386Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1040514Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1430511Permissions Required
• https://bugzilla.mozilla.org/show_bug.cgi?id=1430974Permissions Required
• https://usn.ubuntu.com/3596-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2018-06/Vendor Advisory

Published

Jun 11, 2018

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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