CVE-2026-15583

High

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.

SeverityHigh

CVSS8.6

Exploit probability—

Product

Grafana MCP Server

PublishedJul 15, 2026

First seenJul 15, 2026

Weakness typeCWE-610CWE-610

How to fix

Vendor advisories

grafana.com/security/security-advisories/cve-2026-15583

Affected products

Product	Affected versions	Fixed in
Grafana Grafana MCP Server	v ≤ 0.17.1	—

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