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CVE-2026-8609

Severity CVSS v4.0:
Pending analysis
Type:
CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')
Publication date:
10/07/2026
Last modified:
13/07/2026

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).

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

Base Score 3.x
5.30
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* 11.6.0 (including) 11.6.15 (excluding)
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* 12.2.0 (including) 12.2.9 (excluding)
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* 12.3.0 (including) 12.3.7 (excluding)
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* 12.4.0 (including) 12.4.4 (excluding)
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* 13.0.0 (including) 13.0.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools