Vulnerability in Red Hat Builds For Openshift
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.002 (11.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Red Hat Builds For Openshift
- Red Hat Openshift Pipelines
- Red Hat Openshift Builds 1.7.1 — versions 1783341609
- Red Hat Openshift Builds 1.7.2 — versions 1783341609
- Red Hat Openshift Builds 1.7.3 — versions 1783341609
- Red Hat Openshift Builds 1.7.4 — versions 1783341609
- Red Hat Openshift Builds 1.8.0 — versions 1784121108
- Red Hat Openshift Builds 1.8.1 — versions 1784121108
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-10840 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- access.redhat.com/errata/RHSA-2026:36648 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:41036 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-10840?
- CVE-2026-10840 is a high-severity vulnerability in Red Hat Builds For Openshift, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.1/10. Published 2026-06-04.
- How severe is CVE-2026-10840?
- High severity. CVSS v3 base score is 7.1 out of 10.