[UPDATE] [medium] Red Hat OpenShift and OpenShift AI (urllib3): Vulnerability allows denial of service
A remote, anonymous attacker can exploit a vulnerability in Red Hat OpenShift and OpenShift AI to conduct a denial of service attack.
CSIRTS triage
- What
- A vulnerability in Red Hat OpenShift and OpenShift AI allows a remote, anonymous attacker to conduct a denial of service attack.
- Who is affected
- Red Hat OpenShift and OpenShift AI deployments are affected by this vulnerability.
- Urgency
- Remediation is medium urgency due to the potential for denial of service.
- Action
- Apply the recommended updates to Red Hat OpenShift and OpenShift AI.
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-2026-0198
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.
- Low exploitation riskCVE-2025-664180.65% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-66418 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] Red Hat Enterprise Linux (urllib3): Multiple vulnerabilities allow denial of servicecert-bund
- unknownF5 Products Multiple Vulnerabilitieshkcert
- high[NEW] [high] Oracle Communications: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] IBM QRadar SIEM: Multiple vulnerabilitiescert-bund
- unknownMultiple vulnerabilities in IBM products (July 10, 2026)cert-fr-avis
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.
- highCVE-2026-18381: A flaw was found in the koku-metrics-operator for Red Hat OpenShift. The operator's CostManage…nvd · 2026-07-30
- medium[UPDATE] [medium] Red Hat OpenShift Container Platform (Router): Vulnerability allows bypassing security measu…cert-bund · 2026-07-30
- medium[UPDATE] [medium] Red Hat OpenShift Container Platform (kubelet, cri-o, kube-apiserver): Vulnerability allows …cert-bund · 2026-07-30
- high[UPDATE] [high] Red Hat OpenShift Container Platform (gRPC-Go): Vulnerability allows bypassing security measur…cert-bund · 2026-07-30
- high[UPDATE] [high] Kiali for Red Hat OpenShift Service Mesh (Axios, Go, Follow-redirects): Multiple vulnerabiliti…cert-bund · 2026-07-30
- medium[NEW] [medium] Red Hat OpenShift Container Platform (fast-uri, OpenTelemetry-Go): Multiple vulnerabilitiescert-bund · 2026-07-30
More from CERT-Bund (BSI) Security Advisories
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow Denial of Service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-31