High severity · published Jul 15, 2026
CVE-2026-15583
SSRF (confused deputy) in Grafana MCP Server via X-Grafana-URL header
8.6
CVSS
0.5%
EPSS
No
On KEV
Description
A confused-deputy flaw in Grafana MCP Server allows an unauthenticated remote attacker to exfiltrate the server's environment-configured Grafana service-account token by supplying a crafted X-Grafana-URL request header. This also enables SSRF against arbitrary internal services, including cloud metadata endpoints.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
Grafana · Grafana
0.0.0 through 0.17.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15583
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15583
grafana.com
https://grafana.com/security/security-advisories/cve-2026-15583
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