CVE-2026-8609
Pre-authentication denial of service via the OAuth login route
CVSS Score
5.3
EPSS Score
0.4%
EPSS Percentile
32th
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).
| CWE | CWE-400 |
| Vendor | grafana |
| Product | grafana oss |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 10, 2026 |
| Last Updated | Jul 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Grafana / Grafana OSS
11.6.0 ≤ 11.6.14 12.2.0 ≤ 12.2.8 12.3.0 ≤ 12.3.6 12.4.0 ≤ 12.4.3 13.0.0 ≤ 13.0.1
References
Credits
cyberjoker (Researcher)