A HIGH-severity vulnerability identified as CVE-2026-15583 has been published on July 15, 2026 with a CVSS base score of 8.6. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-15583
Severity: HIGH
CVSS Score: 8.6
Published: July 15, 2026
Weakness (CWE): CWE-610
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Confidentiality Impact | High |
| Integrity Impact | None |
| Availability Impact | None |
Technical 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.
Potential Impact
If exploited, this high-severity vulnerability could allow an attacker to compromise sensitive data confidentiality. Organizations running affected software should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
Related Security Advisories
- [HIGH] CVE-2026-15804 — CVSS 8.8 (July 15, 2026) — HIGH / CVSS 8.8
- [HIGH] CVE-2026-6851 — CVSS 7.0 (July 14, 2026) — HIGH / CVSS 7.0
- [HIGH] CVE-2024-7708 — CVSS 7.5 (July 14, 2026) — HIGH / CVSS 7.5
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