Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.0.12
Red Hat OpenShift Service Mesh 3.0.12, which is based on the open source Istio project, addresses a variety of problems in a microservice architecture by creating a centralized point of control in an application. Security Fix(es): * openshift-service-mesh/istio-proxyv2-rhel9: envoy: HTTP/2 Remote Denial of Service via HPACK compression bomb and Slowloris-style attack (CVE-2026-47774)
AI Analysis
Technical Summary
The vulnerability CVE-2026-47774 in Red Hat OpenShift Service Mesh 3.2.6, based on the Istio project, affects the envoy component in istio-proxyv2-rhel9. It allows a remote denial of service attack through HTTP/2 HPACK compression bomb and Slowloris-style techniques. This can disrupt service availability in microservice architectures controlled by the service mesh. The issue is addressed in the Red Hat OpenShift Service Mesh 3.2.6 update. The advisory does not specify affected versions but indicates the fix is included in this release.
Potential Impact
Successful exploitation of this vulnerability can cause a remote denial of service condition in the affected service mesh proxy component, potentially impacting the availability of microservices managed by Red Hat OpenShift Service Mesh. There are no known exploits in the wild at the time of the advisory. The impact is limited to service disruption via resource exhaustion attacks over HTTP/2.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Service Mesh 3.2.6. Users should upgrade to this version to remediate the vulnerability. The vendor advisory provides updated images and documentation for the upgrade. No additional mitigation steps are specified or required beyond applying the official update.
Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.0.12
Description
Red Hat OpenShift Service Mesh 3.0.12, which is based on the open source Istio project, addresses a variety of problems in a microservice architecture by creating a centralized point of control in an application. Security Fix(es): * openshift-service-mesh/istio-proxyv2-rhel9: envoy: HTTP/2 Remote Denial of Service via HPACK compression bomb and Slowloris-style attack (CVE-2026-47774)
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-47774 in Red Hat OpenShift Service Mesh 3.2.6, based on the Istio project, affects the envoy component in istio-proxyv2-rhel9. It allows a remote denial of service attack through HTTP/2 HPACK compression bomb and Slowloris-style techniques. This can disrupt service availability in microservice architectures controlled by the service mesh. The issue is addressed in the Red Hat OpenShift Service Mesh 3.2.6 update. The advisory does not specify affected versions but indicates the fix is included in this release.
Potential Impact
Successful exploitation of this vulnerability can cause a remote denial of service condition in the affected service mesh proxy component, potentially impacting the availability of microservices managed by Red Hat OpenShift Service Mesh. There are no known exploits in the wild at the time of the advisory. The impact is limited to service disruption via resource exhaustion attacks over HTTP/2.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Service Mesh 3.2.6. Users should upgrade to this version to remediate the vulnerability. The vendor advisory provides updated images and documentation for the upgrade. No additional mitigation steps are specified or required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:26231
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a32705b0b89be68881d44da
Added to database: 6/17/2026, 10:00:59 AM
Last enriched: 6/17/2026, 10:04:52 AM
Last updated: 6/17/2026, 5:22:31 PM
Views: 8
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