CVE-2026-19516

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 5.3

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://grafana.com/security/security-advisories/cve-2026-19516

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-11 06:17

Updated : 2026-08-31 18:50

NVD link : CVE-2026-19516

Mitre link : CVE-2026-19516

CVE.ORG link : CVE-2026-19516

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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