CVE-2019-11728

The HTTP Alternative Services header, Alt-Svc, can be used by a malicious site to scan all TCP ports of any host that the accessible to a user when web content is loaded. This vulnerability affects Firefox < 68.

• CWE-668

• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.htmlMailing List, Third Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1552993Issue Tracking, Permissions Required, Vendor Advisory
• https://security.gentoo.org/glsa/201908-12Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-21/Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.htmlMailing List, Third Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1552993Issue Tracking, Permissions Required, Vendor Advisory
• https://security.gentoo.org/glsa/201908-12Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-21/Vendor Advisory

Published

Jul 23, 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.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2019-11721The unicode latin 'kra' character can be used to spoof a sta…6.5
• CVE-2019-11722Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2019-11723A vulnerability exists during the installation of add-ons wh…7.5
• CVE-2019-11724Application permissions give additional remote troubleshooti…6.1
• CVE-2019-11725When a user navigates to site marked as unsafe by the Safebr…6.5
• CVE-2019-11727A vulnerability exists where it possible to force Network Se…
• CVE-2019-11729Empty or malformed p256-ECDH public keys may trigger a segme…
• CVE-2019-1173An elevation of privilege vulnerability exists in the way th…7
• CVE-2019-11730A vulnerability exists where if a user opens a locally saved…6.5
• CVE-2019-11733When a master password is set, it is required to be entered …9.8
• CVE-2019-11734Mozilla developers and community members reported memory saf…9.8
• CVE-2019-11735Mozilla developers and community members reported memory saf…8.8