CVE-2026-8609

Advisory lineage Upstream: 0 Downstream: 6
Analyzed
Published: 10 Jul 2026, 14:58
Last modified:27 Aug 2026, 17:22

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
0.4% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

10 Jul 2026, 14:58
Published
Vulnerability first disclosed
27 Aug 2026, 17:22
Last Modified
Vulnerability information updated

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).

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.40%• Percentile: 34%

Techniques & Countermeasures

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

Affected Systems

  • grafana•grafana

    ≥ 11.6.0, < 11.6.15 | ≥ 12.2.0, < 12.2.9 | ≥ 12.3.0, < 12.3.7 | ≥ 12.4.0, < 12.4.4 | ≥ 13.0.0, < 13.0.2

  • 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 (1)