Server-Side Request Forgery (SSRF) in Grafana MCP - CVE-2026-15583
Published: July 16, 2026 / Updated: July 24, 2026
Vulnerability identifier: #VU139269
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-15583
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Grafana Labs
Affected software:
Grafana MCP
Grafana MCP
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to server-side request forgery in the X-Grafana-URL request header handling when processing crafted requests. A remote attacker can supply a crafted X-Grafana-URL header to disclose sensitive information.
The issue can expose the server's environment-configured Grafana service-account token, and may also enable access to arbitrary internal services including cloud metadata endpoints.
How to mitigate CVE-2026-15583
Install security update from vendor's website.