CVE-2026-15583

DiscoveredJul 15, 2026UpdatedOct 24, 2026

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.

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CVSS v3.1

8.6 HIGH

EPSS

0.53%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Aug 26, 2026

▲ 0.04pp

0.49% → 0.53% over 2 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

ScopeCHANGED

ConfidentialityHIGH

IntegrityNONE

AvailabilityNONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Connections

1 relationships

CWE-610

source

Timeline

disclosure → media coverage

Jul 15, 2026

Disclosure — published as a CVE record. · last revised by NVD Oct 24, 2026

Public PoC (2)

github.com/codeb0ssx/CVE-2026-15583-PoC github.com/abraxas/CVE-2026-15583

Unverified third-party code — review before executing.