Pre-authentication denial of service via the OAuth login route (Grafana Grafana OSS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.40 % · percentile 34 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GRAFANA
- NVD status
- Analyzed
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).
Weaknesses (CWE)
- CWE-400 — Uncontrolled Resource Consumption
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | GRAFANA |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | NVD · security@grafana.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-42921
- GCVE · GCVE-0-2026-8609
Affected configurations (NVD CPE)
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*≥ 11.6.0 < 11.6.15cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*≥ 12.2.0 < 12.2.9cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*≥ 12.3.0 < 12.3.7cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*≥ 12.4.0 < 12.4.4cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*≥ 13.0.0 < 13.0.2
Affected products
| Product | Versions |
|---|---|
| Grafana · Grafana OSS | affected 11.6.0 ≤ 11.6.14 ; affected 12.2.0 ≤ 12.2.8 ; affected 12.3.0 ≤ 12.3.6 ; affected 12.4.0 ≤ 12.4.3 ; affected 13.0.0 ≤ 13.0.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |