Denial of Service Vulnerability in Grafana by Grafana Labs
CVE-2026-8609

5.3MEDIUM

Key Information:

Vendor

Grafana
Status
Grafana Oss
Vendor
CVE Published:
10 July 2026

What is CVE-2026-8609?

An unauthenticated attacker can exploit a vulnerability in Grafana's OAuth login mechanism by sending a series of unique requests. This results in unbounded memory growth, potentially leading to system memory exhaustion and crashing the Grafana instance. This vulnerability poses a threat to the stability of services reliant on Grafana for data visualization and monitoring.

Affected Version(s)

Grafana OSS 11.6.0 <= 11.6.14

Grafana OSS 12.2.0 <= 12.2.8

Grafana OSS 12.3.0 <= 12.3.6

References

https://grafana.com/security/security-advisories/cve-2026...
vendor-advisory

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

cyberjoker (Researcher)
.