CVE-2026-19516

critical Grafana
CVSS v3 Base Score
9.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
EPSS Score
0.2%
Exploitation probability in 30 days
Top 87% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
Low
Availability
Low
Published: August 11, 2026 (26 days ago)
Last Modified: August 12, 2026
Vendor: Grafana
Source: MITRE

Description

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.

CWE

CWE-918

Affected Products

Grafana Grafana MCP ServerGrafana mcp-grafana

References

🔗 grafana.com