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.
CSIRTS triage
- What
- A vulnerability exists in Grafana MCP Server that requires further investigation.
- Who is affected
- Deployments of Grafana MCP Server version 1.0.0 and earlier are affected.
- Urgency
- Moderate urgency; details are limited and no public exploitation has been reported.
- Action
- Review the Grafana Labs security advisory and apply updates as they become available.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-19516
Get an email if CVE-2026-19516 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
Advisory coverage (2)
- unknownGrafana security advisory (AV26-796)cccs · 2026-08-11
- criticalCVE-2026-19516: A caller-supplied X-Grafana-URL request header controls the destination of mcp-grafana's outbo…nvd · 2026-08-11
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-19516)