CVE-2025-3415: Grafana Information Disclosure Vulnerability

CVE-2025-3415 Overview

CVE-2025-3415 is an Information Exposure vulnerability affecting Grafana, the popular open-source platform for monitoring and observability. The vulnerability exists in the Grafana Alerting DingDing integration, which was not properly protected and could be exposed to users with only Viewer permission. This broken access control allows unauthorized users to access sensitive alerting configuration data that should be restricted to administrators.

Critical Impact

Users with Viewer-level permissions can access DingDing alerting integration configuration data, potentially exposing sensitive notification settings and credentials.

Affected Products

• Grafana versions prior to 10.4.19+security-01
• Grafana versions 11.x prior to 11.2.10+security-01, 11.3.7+security-01, 11.4.5+security-01, 11.5.5+security-01, and 11.6.2+security-01
• Grafana versions 12.x prior to 12.0.1+security-01

Discovery Timeline

• 2025-07-17 - CVE-2025-3415 published to NVD
• 2025-07-17 - Last updated in NVD database

Technical Details for CVE-2025-3415

Vulnerability Analysis

This vulnerability stems from insufficient access control enforcement in Grafana's Alerting DingDing integration component. DingDing (also known as DingTalk) is a popular enterprise communication and collaboration platform widely used in organizations, particularly in the Asia-Pacific region. Grafana integrates with DingDing to enable alert notifications to be sent to DingDing channels and groups.

The core issue is that the API endpoints or UI components responsible for the DingDing integration do not properly validate user permissions before exposing configuration data. Users assigned the Viewer role—who should only have read-only access to dashboards and data—can access DingDing integration settings that typically contain sensitive information such as webhook URLs, access tokens, and notification configuration details.

This vulnerability is classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), highlighting the improper information disclosure aspect of the flaw.

Root Cause

The root cause is a missing or improperly implemented authorization check in the Grafana codebase handling the DingDing alerting integration. The application fails to verify that the requesting user has sufficient privileges (typically Editor or Admin role) before returning DingDing integration configuration data. This represents a broken access control vulnerability where the principle of least privilege is not enforced.

Attack Vector

The attack can be executed over the network by any authenticated user with at least Viewer permissions on the affected Grafana instance. The exploitation is straightforward:

1. An attacker obtains or is assigned Viewer-level access to a Grafana instance
2. The attacker navigates to or queries the DingDing alerting integration configuration
3. The application returns configuration data without validating proper authorization
4. The attacker gains access to sensitive DingDing integration details

This vulnerability does not require user interaction and can be exploited with low attack complexity. The primary impact is on confidentiality, as sensitive alerting configuration data is exposed to unauthorized users. The exposed webhook URLs or tokens could potentially be abused to send unauthorized notifications or for further reconnaissance.

Detection Methods for CVE-2025-3415

Indicators of Compromise

• Unexpected API requests to DingDing alerting integration endpoints from Viewer-level user sessions
• Audit logs showing Viewer accounts accessing alerting notification configuration areas
• Unusual access patterns to /api/alerting/ or DingDing-related endpoints by low-privilege users

Detection Strategies

• Enable and review Grafana access logs for requests to alerting configuration endpoints
• Monitor for unauthorized access attempts to notification channel configurations
• Implement alerting on unusual API access patterns from Viewer-level accounts
• Review user session logs for access to alerting integration settings

Monitoring Recommendations

• Configure centralized logging for all Grafana API requests with user context
• Set up alerts for any Viewer-role access to alerting notification configurations
• Regularly audit user permissions and access patterns in Grafana
• Monitor for bulk or automated requests to alerting configuration endpoints

How to Mitigate CVE-2025-3415

Immediate Actions Required

• Upgrade Grafana to the latest patched version immediately
• Review access logs for any potential unauthorized access to DingDing integration settings
• Audit current DingDing integration credentials and rotate webhook URLs/tokens if compromise is suspected
• Temporarily restrict Viewer access to Grafana instances until patches are applied

Patch Information

Grafana has released security patches addressing this vulnerability. Organizations should upgrade to one of the following fixed versions based on their current deployment:

• 10.4.19+security-01 for 10.4.x deployments
• 11.2.10+security-01 for 11.2.x deployments
• 11.3.7+security-01 for 11.3.x deployments
• 11.4.5+security-01 for 11.4.x deployments
• 11.5.5+security-01 for 11.5.x deployments
• 11.6.2+security-01 for 11.6.x deployments
• 12.0.1+security-01 for 12.0.x deployments

For detailed patch information and download links, refer to the Grafana Security Advisory.

Workarounds

• Implement network-level access controls to limit who can reach the Grafana instance
• Review and restrict Viewer-level user accounts to only essential personnel until patching is complete
• Consider temporarily disabling the DingDing alerting integration if not critical to operations
• Use reverse proxy rules to block access to alerting configuration endpoints for non-admin users

# Example: Grafana upgrade command (Debian/Ubuntu)
sudo apt-get update
sudo apt-get install grafana=11.6.2+security-01
sudo systemctl restart grafana-server