[UPDATE] [high] Red Hat OpenShift Container Platform (gRPC-Go): Vulnerability allows bypassing security measures
A remote, authenticated attacker can exploit a vulnerability in Red Hat OpenShift Container Platform to bypass security measures.
CSIRTS triage
- What
- A remote, authenticated attacker can exploit a vulnerability in Red Hat OpenShift Container Platform to bypass security measures.
- Who is affected
- Authenticated users of Red Hat OpenShift Container Platform are affected.
- Urgency
- Remediation is urgent due to the high severity of the vulnerability.
- Action
- Apply the latest security updates for OpenShift Container Platform.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1136
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Moderate exploitation riskCVE-2026-331861.6% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 73% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-33186 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiple vulnerabilities in Splunk products (20 August 2026)cert-fr-avis
- unknownNCSC-2026-0306 [1.00] [H/H] Vulnerabilities resolved in Oracle Fusion Middlewarencsc-nl
- high[NEW] [high] Oracle Fusion Middleware: Multiple vulnerabilitiescert-bund
- highCVE-2026-33186: gRPC-Go has an authorization bypass via missing leading slash in :pathmsrc
- high[NEW] [high] Oracle Siebel CRM: Multiple vulnerabilitiescert-bund
Recent advisories for Red Hat OpenShift
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- medium[UPDATE] [medium] Red Hat OpenShift: Vulnerability Enables File Manipulationcert-bund · 2026-08-25
- high[NEW] [high] Red Hat OpenShift (oauth-proxy): Vulnerability enables Security Measure Bypasscert-bund · 2026-08-21
- medium[NEW] [medium] Red Hat OpenShift Container Platform (fast-uri, OpenTelemetry-Go): Multiple vulnerabilitiescert-bund · 2026-08-21
- medium[UPDATE] [medium] Red Hat OpenShift Container Platform (protobufjs, fast-uri): Multiple vulnerabilitiescert-bund · 2026-08-21
- high[UPDATE] [high] Red Hat OpenShift Container Platform: Vulnerability enables code executioncert-bund · 2026-08-19
- medium[UPDATE] [medium] Red Hat OpenShift Container Platform (kubelet, cri-o, kube-apiserver): Vulnerability allows …cert-bund · 2026-08-19
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