CVE-2026-8609 (GCVE-0-2026-8609)
Vulnerability from cvelistv5 – Published: 2026-07-10 14:58 – Updated: 2026-08-27 17:22
VLAI
EPSS
VEX
Title
Pre-authentication denial of service via the OAuth login route
Summary
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).
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-10 15:53 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://grafana.com/security/security-advisories/… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Grafana | Grafana OSS |
Affected:
11.6.0 , ≤ 11.6.14
(semver)
Affected: 12.2.0 , ≤ 12.2.8 (semver) Affected: 12.3.0 , ≤ 12.3.6 (semver) Affected: 12.4.0 , ≤ 12.4.3 (semver) Affected: 13.0.0 , ≤ 13.0.1 (semver) |
guessed |
Date Public
2026-06-09 00:00
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