Red Hat Security Advisory

RHSA-2026:49770

Red Hat OpenShift Service Mesh 3.4.1

Released 2026-08-03 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat OpenShift Service Mesh 3.4 registry.redhat.io/openshift-service-mesh/istio-cni-rhel9, registry.redhat.io/openshift-service-mesh/istio-pilot-rhel9, registry.redhat.io/openshift-service-mesh/istio-proxyv2-rhel9 +1

TI-2026-21595 CVE-2026-27145 · GHSA-4279-q6mj-392r

LOW 30

(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries.

CVSS 3.1MEDIUM 6.5 Network No auth No interaction EPSS 0.00591 Published 2026-06-02 Partial fix · 1.25.11, 1.26.4