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TI-2026-07565 Aliases CVE-2026-8609GHSA-j7jj-549c-j492

Pre-authentication denial of service via the OAuth login route

Priority LOW 39CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 4 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-400.

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00397 34th percentileScored 2026-11-07
Fix Partial Red Hat: 6 advisoriesRed Hat: 4 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GrafanaGrafana OSS11.6.0 – 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—No fix listedCNA
  • Grafana OSS VendorGrafana Affected 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 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*11.6.0 to before 11.6.15; 12.2.0 to before 12.2.9; 12.3.0 to before 12.3.7; 12.4.0 to before 12.4.4; 13.0.0 to before 13.0.2VulnerableGrafana
  • cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* Versions 11.6.0 to before 11.6.15; 12.2.0 to before 12.2.9; 12.3.0 to before 12.3.7; 12.4.0 to before 12.4.4; 13.0.0 to before 13.0.2 Vulnerable ·Grafana

Remediation

Red Hat 6 advisories

  • RHSA-2026:90811 Released 2026-10-29 · Red Hat rating Moderate
    grafana security update
    • Red Hat Enterprise Linux AppStream (v. 9) grafana-10.2.6-23.el9_8.4, grafana-selinux-10.2.6-23.el9_8.4
  • RHSA-2026:67517 Released 2026-09-15 · Red Hat rating Important
    grafana security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) grafana-10.2.6-26.el10_0, grafana-selinux-10.2.6-26.el10_0
  • RHSA-2026:65157 Released 2026-09-08 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana12.4-12.4.10-0.1.hum1@aarch64, grafana12.4-12.4.10-0.1.hum1@src, grafana12.4-12.4.10-0.1.hum1@x86_64
Show 3 more Red Hat advisories
  • RHSA-2026:63165 Released 2026-09-03 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana13.1-13.1.3-0.5.hum1@aarch64, grafana13.1-13.1.3-0.5.hum1@src, grafana13.1-13.1.3-0.5.hum1@x86_64
  • RHSA-2026:63164 Released 2026-09-03 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana13.2-13.2.1-0.1.hum1@aarch64, grafana13.2-13.2.1-0.1.hum1@src, grafana13.2-13.2.1-0.1.hum1@x86_64
  • RHSA-2026:54178 Released 2026-08-12 · Red Hat rating Moderate
    grafana security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) grafana-10.2.6-28.el10_2.4, grafana-selinux-10.2.6-28.el10_2.4

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ceph Storage 9AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:54178
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:90811
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:67517
Red Hat Hardened ImagesFixed RHSA-2026:63164, RHSA-2026:63165, RHSA-2026:65157
Not affected: 8 products
  • Multicluster Global Hub
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Ceph Storage 5
  • Red Hat Ceph Storage 6
  • Red Hat Ceph Storage 7
  • Red Hat Ceph Storage 8
  • Red Hat Enterprise Linux 8
  • Red Hat Hardened Images

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-8609
  2. 2026-10-03 Alias added: GHSA-j7jj-549c-j492
  3. 2026-10-30 Fix available: RHSA-2026:90811 · Red Hat
  4. 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream (v. 9) · Red Hat

References

Advisory 1

  • TI-2021-16611 Snapshot authentication bypass in grafana KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-19604 Grafana path traversal KEVCVSS 3.1HIGH 7.5
  • TI-2024-08600 Grafana SQL Expressions allow for remote code execution CVSS 4.0CRITICAL 9.4
  • TI-2023-02931 Authentication bypass by spoofing in Grafana CVSS 3.1CRITICAL 9.8
  • TI-2020-10491 The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control… CVSS 3.1HIGH 8.2
  • TI-2025-03662 Open redirect in Grafana CVSS 3.1HIGH 7.6
See all 103 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences