Advisoriesby IbisGrafana LabsCVE-2026-19516
Grafana MCP Server: server-side request forgery
No fix yet
A caller-supplied X-Grafana-URL request header controls the destination of mcp-grafana's outbound requests, and the grafana_api_request tool lets the caller also choose the HTTP method, path, and body. Because the destination is not restricted to the configured Grafana instance, a caller can direct requests at internal, loopback, and link-local network services (including metadata endpoints) and read the responses, resulting in server-side request forgery. The fix for CVE-2026-15583 prevented the configured service-account token from being sent to unintended destinations but did not restrict the destinations themselves.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Grafana MCP Server Product | >= 0.0.0, <= 1.0.0 | No fix yet |
| mcp-grafana Product | >= 0.0.0, <= 1.0.0 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-918