Answer in brief
CVE-2026-66792 records a Critical severity (CVSS 9.9) vulnerability in Multicloud-operators-subscription: multicloud-operators-subscription: isclusteradmin() trusts user-settable annotations on managed clusters. The current sources do not mark it as known exploited. The current feed maps Red Hat/openshift4/cnf-tests-rhel8 (generic), Red Hat/openshift4/ztp-site-generate-rhel8 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/openshift4/cnf-tests-rhel8 (generic), Red Hat/openshift4/ztp-site-generate-rhel8 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/openshift4/cnf-tests-rhel8generic | * | Not reported |
| Red Hat/openshift4/ztp-site-generate-rhel8generic | * | Not reported |
Published upstream
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.
Quoted source text, attributed separately from HOL analysis.