CVE-2026-15583

SSRF (confused deputy) in Grafana MCP Server via X-Grafana-URL header

State: Published
Severity: 8.6 High
Published: Jul 15, 2026
Updated: Aug 27, 2026
Reserved: Jul 13, 2026

Description

A confused-deputy flaw in Grafana MCP Server allows an unauthenticated remote attacker to exfiltrate the server's environment-configured Grafana service-account token by supplying a crafted X-Grafana-URL request header. This also enables SSRF against arbitrary internal services, including cloud metadata endpoints.

Scores

CVSS	Score	Vector	Source
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N	GRAFANA

Weaknesses

CWE-610 Externally Controlled Reference to a Resource in Another Sphere

Affected Products

Product	Versions
Grafana MCP ServerGrafana	0.0.0 through 0.17.1Affected

References

https://grafana.com/security/security-advisories/cve-2026-15583vendor-advisory

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