CVE-2020-27836

A flaw was found in cluster-ingress-operator. A change to how the router-default service allows only certain IP source ranges could allow an attacker to access resources that would otherwise be restricted to specified IP ranges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability..

• CWE-732
• CWE-732

• https://access.redhat.com/security/cve/CVE-2020-27836Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1905490Issue Tracking, Permissions Required, Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1906267Issue Tracking, Patch, Vendor Advisory
• https://github.com/openshift/cluster-ingress-operator/pull/507/commits/92c83f281ba5fb6a1d91ecc3beaa4bcf2647a729Patch, Third Party Advisory
• https://access.redhat.com/security/cve/CVE-2020-27836Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1905490Issue Tracking, Permissions Required, Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1906267Issue Tracking, Patch, Vendor Advisory
• https://github.com/openshift/cluster-ingress-operator/pull/507/commits/92c83f281ba5fb6a1d91ecc3beaa4bcf2647a729Patch, Third Party Advisory

Published

Aug 22, 2022

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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