CVE-2026-22051: StorageGRID Information Disclosure Flaw

CVE-2026-22051 Overview

CVE-2026-22051 is an Information Disclosure vulnerability affecting NetApp StorageGRID (formerly StorageGRID Webscale) versions prior to 11.9.0.13 and 12.0.0.6. This vulnerability allows an authenticated attacker with low privileges to execute arbitrary metrics queries, potentially revealing metric results that should be restricted from their access level.

Critical Impact

Authenticated attackers with minimal privileges can bypass access controls to retrieve sensitive metric data, potentially exposing operational information about the storage infrastructure.

Affected Products

• NetApp StorageGRID versions prior to 11.9.0.13
• NetApp StorageGRID versions prior to 12.0.0.6
• NetApp StorageGRID Webscale (legacy naming)

Discovery Timeline

• 2026-04-20 - CVE-2026-22051 published to NVD
• 2026-04-21 - Last updated in NVD database

Technical Details for CVE-2026-22051

Vulnerability Analysis

This vulnerability falls under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). The flaw exists in the metrics query functionality of NetApp StorageGRID, where insufficient authorization checks allow authenticated users with low-privilege accounts to access metric data beyond their intended permission scope.

StorageGRID is an enterprise-grade object storage solution used for managing large-scale unstructured data. The metrics subsystem provides operational insights into storage performance, capacity utilization, and system health. Under normal circumstances, access to these metrics should be restricted based on user roles and permissions. However, this vulnerability allows low-privileged users to craft and execute arbitrary metrics queries that return results from protected metric endpoints.

The attack requires authentication, meaning an attacker must first obtain valid credentials for the StorageGRID management interface. Once authenticated, even with minimal privileges, the attacker can exploit the improper access control to gather intelligence about the storage infrastructure.

Root Cause

The root cause of this vulnerability is improper authorization enforcement in the metrics query processing component. While the system correctly authenticates users, it fails to adequately validate whether the authenticated user has sufficient privileges to access the specific metrics being requested. This represents a classic case of broken access control where authentication and authorization are not properly coupled.

Attack Vector

The attack is network-based and requires an authenticated session. An attacker would first authenticate to the StorageGRID management interface using valid credentials (potentially obtained through credential theft, social engineering, or legitimate low-privilege access). Once authenticated, the attacker can submit crafted metrics queries through the management interface to retrieve metric data that should be restricted to higher-privilege accounts. The vulnerability does not enable modification or deletion of data, limiting the impact to information disclosure.

Detection Methods for CVE-2026-22051

Indicators of Compromise

• Unusual metrics query patterns from low-privilege user accounts
• Unexpected access to administrative or restricted metric endpoints
• Anomalous API calls to the metrics subsystem from non-administrative users
• Elevated query frequency from accounts that typically have limited interaction with metrics

Detection Strategies

• Implement audit logging for all metrics query requests with user context
• Monitor for metrics queries originating from accounts without appropriate administrative roles
• Review access logs for patterns of privilege escalation attempts via the metrics API
• Deploy anomaly detection to identify unusual query patterns or data access volumes

Monitoring Recommendations

• Enable detailed logging on the StorageGRID management interface
• Correlate authentication events with subsequent metrics API activity
• Establish baselines for normal metrics access patterns per user role
• Alert on metrics queries from accounts that have not previously accessed the metrics subsystem

How to Mitigate CVE-2026-22051

Immediate Actions Required

• Update NetApp StorageGRID to version 11.9.0.13 or later for the 11.x branch
• Update NetApp StorageGRID to version 12.0.0.6 or later for the 12.x branch
• Review and audit all user accounts with access to the StorageGRID management interface
• Implement network segmentation to limit access to management interfaces

Patch Information

NetApp has released security patches to address this vulnerability. Organizations running affected versions should upgrade to StorageGRID version 11.9.0.13 or 12.0.0.6 or later. Detailed patch information is available in the NetApp Security Advisory.

Workarounds

• Restrict network access to the StorageGRID management interface to trusted administrative networks only
• Review and minimize the number of accounts with access to the management interface
• Implement additional authentication controls such as multi-factor authentication for management access
• Monitor metrics query logs for suspicious activity until patches can be applied

# Example: Restrict management interface access via firewall rules
# Limit access to management ports from trusted admin networks only
iptables -A INPUT -p tcp --dport 443 -s <trusted_admin_network> -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP