RHSA-2026:68695 - Security Advisory

Topic

Kiali 2.27.4 for Red Hat OpenShift Service Mesh 3.4 is now available.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Kiali 2.27.4, for Red Hat OpenShift Service Mesh 3.4, provides observability for the service mesh by offering a visual representation of the mesh topology and metrics, helping users monitor, trace, and manage efficiently.

Security Fix(es):

• CVE-2026-45820 openshift-service-mesh/kiali-rhel9: fflate: Denial of Service via crafted ZIP archives (OSSM-15737)
• CVE-2026-45820 openshift-service-mesh/kiali-ossmc-rhel9: fflate: Denial of Service via crafted ZIP archives (OSSM-15740)
• CVE-2026-75838 openshift-service-mesh/kiali-ossmc-rhel9: DOMPurify: Cross-Site Scripting via IN_PLACE sanitization (OSSM-15747)
• CVE-2026-75838 openshift-service-mesh/kiali-rhel9: DOMPurify: Cross-Site Scripting via IN_PLACE sanitization (OSSM-15748)
• CVE-2026-84375 openshift-service-mesh/kiali-ossmc-rhel9: js-yaml: Denial of Service vulnerability in YAML parsing (OSSM-15850)
• CVE-2026-84375 openshift-service-mesh/kiali-rhel9: js-yaml: Denial of Service vulnerability in YAML parsing (OSSM-15851)
• CVE-2026-56860 openshift-service-mesh/kiali-rhel9: golang net/url: Denial of Service from quadratic complexity in path resolution (OSSM-15404)
• CVE-2026-56862 openshift-service-mesh/kiali-rhel9: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (OSSM-15447)
• CVE-2026-33818 openshift-service-mesh/kiali-rhel9: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (OSSM-15457)

Bug Fix(es):

• OSSM-15616 Service Mesh console only shows one control plane revision in Namespaces view during RevisionBased upgrade

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

See Kiali 2.27.4 documentation at https://docs.redhat.com/en/documentation/red_hat_openshift_service_mesh/3.4/html/observability/kiali-operator-provided-by-red-hat

Affected Products

• Red Hat OpenShift Service Mesh

Fixes

• OSSM-15616 - Service Mesh console only shows one control plane revision in Namespaces view during RevisionBased upgrade

CVEs

• CVE-2026-33818
• CVE-2026-45820
• CVE-2026-56860
• CVE-2026-56862
• CVE-2026-75838
• CVE-2026-84375

References

• https://access.redhat.com/security/updates/classification
• https://access.redhat.com/security/updates/classification/