---
id: CVE-2026-10840
title: A flaw was found in the OpenShift Pipelines operator
summary: >-
  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 Cluster…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H'
cwe:
  - CWE-732
  - CWE-732
published: '2026-06-04'
updated: '2026-07-08'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-10840'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:36648'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-10840'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2484720'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-10840'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2484720'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10840.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
epss: 0.0022
epssPercentile: 0.11174
ingestedAt: '2026-07-08T10:50:43.748Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.