What is CVE-2026-15583?

CVE-2026-15583 is a high-severity vulnerability in Grafana Mcp Server, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 8.6/10. Published 2026-07-15.

How severe is CVE-2026-15583?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Grafana Mcp Server

CVE-2026-15583

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 S…

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Grafana Mcp Server — versions 0.0.0

Weakness classification (CWE)

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

References

security@grafana.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-15583?: CVE-2026-15583 is a high-severity vulnerability in Grafana Mcp Server, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 8.6/10. Published 2026-07-15.
How severe is CVE-2026-15583?: High severity. CVSS v3 base score is 8.6 out of 10.