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CVE-2026-73268

Cluster-curator-controller: cluster-curator-controller: spec.install.overridejob allows arbitrary job spec injection

Published: Aug 12, 2026Updated: Aug 25, 2026 Sources: CVE List NVDCWE-94
9.9CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 70.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

Description

A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob() function does not validate user-controlled input when unmarshaling the spec.install.overrideJob raw extension. Successful exploitation allows the injected Job to run with the controller's elevated privileges, leading to arbitrary code execution and privilege escalation, potentially accessing cluster-wide secrets.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-94

Affected Products

Red Hat
commercial·US
multicluster engine for Kubernetes 2.11On-prem
Cloud & SaaS / container-orchestration
multicluster engine for Kubernetes 2.17On-prem
Operating Systems / linux-distro

Exploitability

Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

https://access.redhat.com/errata/RHSA-2026:59556
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:59593
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-73268
access.redhat.com
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