CVE-2026-10840

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:36648
https://access.redhat.com/errata/RHSA-2026:41036
https://access.redhat.com/security/cve/CVE-2026-10840
https://bugzilla.redhat.com/show_bug.cgi?id=2484720
https://access.redhat.com/errata/RHSA-2026:36648
https://access.redhat.com/errata/RHSA-2026:41036
https://access.redhat.com/security/cve/CVE-2026-10840
https://bugzilla.redhat.com/show_bug.cgi?id=2484720
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10840.json

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-04 12:16

Updated : 2026-09-06 02:17

NVD link : CVE-2026-10840

Mitre link : CVE-2026-10840

CVE.ORG link : CVE-2026-10840

JSON object : View

Products Affected

No product.

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

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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."}, {"lang": "es", "value": "Una falla se encontr\u00f3 en el operador de OpenShift Pipelines. El ClusterRoleBinding tekton-scheduler-rolebinding otorga al grupo system:authenticated acceso de escritura a los recursos personalizados de Kueue y cert-manager a trav\u00e9s del ClusterRole tekton-scheduler-role. Cuando los CRD de Kueue o cert-manager est\u00e1n presentes en el cl\u00faster, cualquier usuario autenticado puede interrumpir la programaci\u00f3n de cargas de trabajo, manipular las prioridades de programaci\u00f3n, eliminar objetos Workload de otros inquilinos o inducir a cert-manager a sobrescribir Secretos TLS, incluyendo el certificado predeterminado del controlador de entrada."}], "lastModified": "2026-09-06T02:17:18.100", "sourceIdentifier": "secalert@redhat.com"}