CVE-2026-8609 — MEDIUM (5.3)

Q: How severe is CVE-2026-8609?

CVE-2026-8609 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-8609?

Check the references section above for vendor advisories and patch information. Affected products include: Grafana Grafana.

Vulnerability Description

An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denial of service).

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Grafana	Grafana	>= 11.6.0, < 11.6.15

Related Weaknesses (CWE)

CWE-400

References

https://grafana.com/security/security-advisories/cve-2026-8609Vendor Advisory

FAQ

What is CVE-2026-8609?

CVE-2026-8609 is a vulnerability with a CVSS score of 5.3 (MEDIUM). An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denia...

How severe is CVE-2026-8609?

CVE-2026-8609 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-8609?

Check the references section above for vendor advisories and patch information. Affected products include: Grafana Grafana.