critical severityConfidence highHistorical record

Grafana MCP server SSRF via caller-controlled URL headers

Direct answer

Grafana MCP server SSRF via caller-controlled URL headers, also tracked as CVE-2026-19516 is a critical-severity threat campaign HOL Guard tracked from Aug 21, 2026 to Aug 21, 2026, verified against 4 primary sources and last reviewed Oct 5, 2026. Active tracking has ended and the record remains published as a permanent historical research record.

Grafana MCP before 1.1.0 allows callers who can invoke grafana_api_request to use X-Grafana-URL to redirect outbound requests to internal, loopback, or link-local services and read the responses. Grafana rates CVE-2026-19516 Critical at CVSS 9.1 and fixes it in 1.1.0 and later.

Also tracked as CVE-2026-19516

First observed
Aug 21, 2026
Last observed
Aug 21, 2026
Last reviewed
Oct 5, 2026
Tracking ended
Aug 21, 2026

Record exports

JSON recordArtifact CSVSTIX 2.1 bundle

Uncertainty and limitations

Read the evidence limits before acting on this record.

The Grafana advisory establishes the fixed floor as 1.1.0. Confirm the deployed mcp-grafana version and whether untrusted callers can invoke grafana_api_request when assessing exposure.

  • Campaign tracks CVE-2026-19516 only.
  • The issue requires a caller able to invoke the grafana_api_request tool; this record does not claim unauthenticated internet exploitation.
  • Grafana lists CVSS 3.1 score 9.1 (Critical) and fixed versions >=1.1.0.
  • HOL blog is operator guidance.

Guard coverage and policy

What Guard's reviewed assertions do and do not claim for this campaign, and the reviewed starting points for defense.

No Guard coverage mapping or campaign-specific policy guidance is published for this record.

Safe next step. Campaign guidance is defensive context. It does not auto-apply policy or claim universal campaign coverage.

Open policy controlsCampaign-specific emergency policy starting point

Timeline

Reviewed events, oldest first, each tied to a verified source.

  1. Disclosure

    CVE-2026-19516 Grafana MCP SSRF disclosed.

    Sources:NVD CVE-2026-19516·CVE Record CVE-2026-19516

  2. Update

    HOL Guard published operator coverage.

    Source:HOL Guard operator write-up

  3. Vendor action

    Grafana's security advisory rates CVE-2026-19516 Critical at CVSS 9.1 and lists fixed versions as 1.1.0 and later.

    Source:Grafana CVE-2026-19516 security advisory

Publication clock: 1081.3 hours from reviewed disclosure timestamp to HOL publication; 12-hour critical target; historical backfill outside target.

Sources

Every claim on this record is traceable to the sources below.

Campaign questions, answered

Grafana MCP before 0 allows callers who can invoke grafana_api_request to use X-Grafana-URL to redirect outbound requests to internal, loopback, or link-local services and read the responses. HOL Guard tracked the campaign from Aug 21, 2026 to Aug 21, 2026.

No. Active tracking ended Aug 21, 2026; this page remains as a labeled historical research record and does not imply the threat is currently active.

The record cites 4 primary sources, names 0 reviewed artifacts, and was last fully reviewed Oct 5, 2026 by HOL Guard Security Publishing. Its uncertainty and limitations are stated on the record itself.

Campaign guidance is defensive context. It does not auto-apply policy or claim universal campaign coverage.

The permalink above is permanent. The full record can be downloaded from this page as JSON, an artifact CSV, and a STIX 2.1 bundle, and corrections can be requested through the published correction path on the record. The Grafana advisory establishes the fixed floor as 1.1.0. Confirm the deployed mcp-grafana version and whether untrusted callers can invoke grafana_api_request when assessing exposure.

Reviewed in full by HOL Guard Security Publishing.

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Record HGTC-2026-4F4E6610