CVE Catalog

CVE-2026-10840

HighCVSS 7.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.22%

12th percentile - higher than 12% of all known CVEs

Summary

A flaw in the OpenShift Pipelines operator. The 'tekton-scheduler-rolebinding' ClusterRoleBinding grants the 'system:authenticated' group write access to Kueue and cert-manager custom resources via the 'tekton-scheduler-role' ClusterRole. When Kueue or cert-manager CRDs are present, any authenticated user can disrupt workload scheduling, tamper with priorities, delete other tenants' Workload objects, or induce cert-manager to overwrite TLS Secrets including the default ingress controller certificate.

Risk Assessment

Risk includes unauthorized access to critical scheduling and certificate management resources, potentially leading to application downtime, data integrity breaches, and traffic interception.

Recommendation

Immediately review and restrict the permissions granted by the 'tekton-scheduler-rolebinding' ClusterRoleBinding. Consider applying more restrictive RBAC rules or temporarily removing the binding until an official patch is released.

Related vulnerabilities

Original NVD description (English source)

A flaw was found in the OpenShift Pipelines operator. The tekton-scheduler-rolebinding ClusterRoleBinding grants the system:authenticated group write access to Kueue and cert-manager custom resources via the tekton-scheduler-role ClusterRole. When Kueue or cert-manager CRDs are present on the cluster, any authenticated user can disrupt workload scheduling, tamper with scheduling priorities, delete other tenants' Workload objects, or induce cert-manager to overwrite TLS Secrets including the default ingress controller certificate.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS