CVE-2026-19516: critical vulnerability in Grafana mcp-grafana
CVE-2026-19516 CVE Record
Published · Updated
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48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.1epss 0.3%
from disclosure to weapon24 days
Published on NVDAug 11
1st PoC+24d
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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
public PoCs found — 1
githubgithub.com/HORKimhab/CVE-2026-19516★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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