CVE-2020-15653

An iframe sandbox element with the allow-popups flag could be bypassed when using noopener links. This could have led to security issues for websites relying on sandbox configurations that allowed popups and hosted arbitrary content. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlThird Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1521542Issue Tracking, Permissions Required, Vendor Advisory
• https://usn.ubuntu.com/4443-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlThird Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1521542Issue Tracking, Permissions Required, Vendor Advisory
• https://usn.ubuntu.com/4443-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory

Published

Aug 10, 2020

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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