CVE-2026-11769 — Grafana Operator
Critical | Path Traversal & Privilege Escalation | Kubernetes Operator
Affects Grafana Operator versions prior to 5.24.0. Rated CRITICAL by the vendor. Enables attackers to traverse filesystem paths and escalate privileges within Kubernetes clusters.

CVE-2026-11769 is a critical vulnerability in the Grafana Operator for Kubernetes, rated CRITICAL by Grafana. This flaw combines path traversal with privilege escalation, allowing an attacker with limited access to break out of the operator’s intended boundaries and access sensitive cluster resources. All deployments running Grafana Operator versions prior to 5.24.0 are affected, regardless of the underlying Kubernetes distribution or environment.

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What Is the Vulnerability

CVE-2026-11769 is a path traversal vulnerability within the Grafana Operator that chains into privilege escalation inside Kubernetes clusters. The Grafana Operator is responsible for managing Grafana instances, dashboards, data sources, and associated configuration across Kubernetes environments. It operates with elevated cluster privileges to provision and manage these resources.

The vulnerability arises from insufficient validation of file paths supplied to certain operator endpoints. An attacker who can interact with the operator — whether through a compromised Grafana instance managed by the operator, a malicious dashboard definition, or crafted API calls — can supply paths containing traversal sequences (e.g., ../../) to break out of the intended directory scope. This path traversal capability enables access to files and resources outside the operator’s designated boundaries.

Because the Grafana Operator runs with elevated Kubernetes service account permissions in order to manage cluster-wide resources, successful exploitation can escalate into broader cluster compromise. An attacker may be able to:

• Read sensitive cluster resources including Secrets, ConfigMaps, and ServiceAccount tokens across namespaces
• Access Grafana data source credentials stored in Kubernetes Secrets
• Modify or exfiltrate dashboard configurations containing embedded credentials
• Potentially pivot to other workloads within the cluster using compromised service account credentials

In the Kubernetes threat model, an operator with excessive effective permissions is a high-value target. Compromising the Grafana Operator can give attackers a foothold from which to move laterally across the entire cluster.

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Versions Affected

• Grafana Operator versions prior to 5.24.0
• All Kubernetes distributions and environments running an affected operator version are impacted, including:
  • Self-managed Kubernetes clusters (vanilla, kubeadm, k3s, etc.)
  • Managed Kubernetes services (EKS, AKS, GKE)
  • OpenShift clusters
  • On-premises and air-gapped deployments

The vulnerability exists in the operator code itself and is not specific to any particular Kubernetes distribution or cloud provider. Any cluster where the Grafana Operator is installed at a vulnerable version should be considered at risk.

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Exploited?

As of this writing, there are no confirmed reports of active exploitation of CVE-2026-11769 in the wild. However, given the critical severity rating from the vendor and the relative ease with which path traversal vulnerabilities can be weaponised once understood, this situation may change quickly.

The combination of path traversal and privilege escalation in a widely deployed Kubernetes operator makes this an attractive target for threat actors who have already gained any form of initial access to a cluster. Organisations should not wait for public proof-of-concept code or active exploitation reports before applying the fix.

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Fix

Grafana has released Grafana Operator version 5.24.0 which fully addresses this vulnerability. The fix implements proper input validation and sanitisation of file paths, blocking traversal sequences and restricting operator file access to authorised directories only.

Upgrade immediately:

• Upgrade the Grafana Operator to version 5.24.0 or later
• If using Helm, update your Helm chart values and run helm upgrade
• If using OLM (Operator Lifecycle Manager) on OpenShift, approve the upgrade through the OLM interface
• If installed via static manifests, apply the updated deployment manifests from the Grafana Operator release
• After upgrading, verify the operator is running the updated image tag and all pods have restarted

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Recommendations

1. Upgrade immediately. This is a critical-rated vulnerability in cluster infrastructure. Apply Grafana Operator 5.24.0 as an emergency change across all environments: production, staging, development, and any air-gapped installations.
2. Audit RBAC permissions. Review the Kubernetes RBAC roles, ClusterRoles, and ServiceAccounts associated with the Grafana Operator. Apply the principle of least privilege — the operator should have only the permissions strictly required for its function. Post-upgrade is an ideal time to tighten these scopes.
3. Review audit logs. Examine Kubernetes audit logs for suspicious activity patterns involving the Grafana Operator service account. Look for unusual Secret access, unexpected ConfigMap reads across namespaces, or anomalous API calls originating from the operator’s identity.
4. Rotate credentials. As a precautionary measure, consider rotating any credentials or tokens that were accessible within the cluster during the window of vulnerability, particularly Grafana data source passwords and any ServiceAccount tokens the operator had access to.
5. Network segmentation. Ensure the Grafana Operator’s API endpoints are not inadvertently exposed beyond the cluster boundary. The operator’s interfaces should be reachable only within the cluster’s internal network.
6. Monitor for indicators. Configure alerting for unexpected operator behaviour, including file access outside normal paths, unusual Secret read activity, and unexpected pod creations or modifications by the operator identity.

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References

• Grafana Operator GitHub Releases
• Grafana Operator Documentation
• Grafana Operator GitHub Repository

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Disclaimer: This post is part of the Vulnerability Intelligence series for informational purposes. CVE details are based on publicly available information at the time of writing. Always verify against official vendor advisories and the NVD before taking action in production environments.