Vulnerability · Published Aug 11, 2026 · Assigned by GRAFANA
CVE-2026-19516CVE-2026-19516 CVE Record
Critical 9.1
In plain English
A critical-severity server-side request forgery in Grafana MCP Server from Grafana. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Grafana MCP Server | 0.0.0 – through 1.0.0 |
| Grafana | mcp-grafana | 0.0.0 – through 1.0.0 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
References
- https://grafana.com/security/security-advisories/cve-2026-19516 vendor-advisory