High severity · published Jun 4, 2026
CVE-2026-10840
Openshift-pipelines-operator-rh: openshift-pipelines-operator: tekton-scheduler-rolebinding grants system:authenticated write access to kueue and cert-manager resources
7.1
CVSS
0.2%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenShift Pipelines · Red Hat
All versions, or not specified · source: vendor, CISA
RH
Red Hat OpenShift Builds 1.7.3 · Red Hat
All versions, or not specified · source: vendor, CISA
RH
Red Hat OpenShift Builds 1.8.1 · Red Hat
All versions, or not specified · source: vendor, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-10840
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-10840
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:36648
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:41036
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-10840
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2484720
security.access.redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10840.json
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