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TI-2026-30467 Aliases CVE-2026-42127GHSA-3w66-95m3-8jxg

Pre-authentication denial of service in the public dashboard query endpoint

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: 9 fixed, 5 without a fix

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

Summary

The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00432 37th percentileScored 2026-11-07
Fix Partial github.com/grafana/grafana (Go): 1.9.2-0.20260616075434-82ef13993059Red Hat: 11 advisoriesRed Hat: 9 fixed, 5 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 Enterprise11.6.0 – 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
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
—github.com/grafana/grafana (Go)2.0.0-beta1 and later—No fix listedGHSA-3w66-95m3-8jxg
—github.com/grafana/grafana (Go)12.0.0 and later—No fix listedGHSA-3w66-95m3-8jxg
—github.com/grafana/grafana (Go)12.3.0 and later—No fix listedGHSA-3w66-95m3-8jxg
—github.com/grafana/grafana (Go)12.4.0 and later—No fix listedGHSA-3w66-95m3-8jxg
—github.com/grafana/grafana (Go)13.0.0 and later—No fix listedGHSA-3w66-95m3-8jxg
—github.com/grafana/grafana (Go)before 1.9.2-0.20260616075434-82ef139930591.9.2-0.20260616075434-82ef13993059Patch availableGHSA-3w66-95m3-8jxg
  • Grafana Enterprise 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
  • 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
  • github.com/grafana/grafana (Go) Vendor— Affected 2.0.0-beta1 and later Fixed in — No fix listed GHSA-3w66-95m3-8jxg
  • github.com/grafana/grafana (Go) Vendor— Affected 12.0.0 and later Fixed in — No fix listed GHSA-3w66-95m3-8jxg
  • github.com/grafana/grafana (Go) Vendor— Affected 12.3.0 and later Fixed in — No fix listed GHSA-3w66-95m3-8jxg
  • github.com/grafana/grafana (Go) Vendor— Affected 12.4.0 and later Fixed in — No fix listed GHSA-3w66-95m3-8jxg
  • github.com/grafana/grafana (Go) Vendor— Affected 13.0.0 and later Fixed in — No fix listed GHSA-3w66-95m3-8jxg
  • github.com/grafana/grafana (Go) Vendor— Affected before 1.9.2-0.20260616075434-82ef13993059 Fixed in 1.9.2-0.20260616075434-82ef13993059 Patch available GHSA-3w66-95m3-8jxg

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*up to 11.6.14; 12.2.0 – 12.2.8; 12.3.0 – 12.3.6; 12.4.0 – 12.4.3; 13.0.0 – 13.0.1VulnerableGrafana
  • cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:* Versions up to 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 Vulnerable ·Grafana

Remediation

  • Fix · GHSA-3w66-95m3-8jxg github.com/grafana/grafana (Go) Fixed in 1.9.2-0.20260616075434-82ef13993059 Advisory →

Red Hat 11 advisories

  • RHSA-2026:95517 Released 2026-11-05 · Red Hat rating Important
    Multicluster Global Hub 1.7.4 security update
    • Multicluster Global Hub 1.7.4 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +1
  • RHSA-2026:76795 Released 2026-10-06 · Red Hat rating Important
    grafana security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) grafana-9.2.10-28.el9_4, grafana-selinux-9.2.10-28.el9_4
  • RHSA-2026:72885 Released 2026-09-28 · Red Hat rating Important
    Red Hat Advanced Cluster Management for Kubernetes v2.13.13 security update
    • Red Hat Advanced Cluster Management for Kubernetes 2.13 registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/endpoint-monitoring-rhel9-operator, registry.redhat.io/rhacm2/grafana-dashboard-loader-rhel9 +2
Show 8 more Red Hat advisories
  • RHSA-2026:68778 Released 2026-09-17 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images grafana13.2-13.2.1-0.5.hum1@aarch64, grafana13.2-13.2.1-0.5.hum1@src, grafana13.2-13.2.1-0.5.hum1@x86_64
  • RHSA-2026:67518 Released 2026-09-15 · Red Hat rating Important
    grafana security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) grafana-10.2.6-23.el9_6, grafana-selinux-10.2.6-23.el9_6
  • 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-2026:54243 Released 2026-08-12 · Red Hat rating Important
    grafana security update
    • Red Hat Enterprise Linux AppStream (v. 8) grafana-9.2.10-32.el8_10.1, grafana-selinux-9.2.10-32.el8_10.1
  • RHSA-2026:54184 Released 2026-08-12 · Red Hat rating Important
    grafana security update
    • Red Hat Enterprise Linux AppStream (v. 9) grafana-10.2.6-23.el9_8.1, grafana-selinux-10.2.6-23.el9_8.1
  • 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
  • RHSA-2026:47619 Released 2026-07-28 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana12.4-12.4.6-0.2.hum1@aarch64, grafana12.4-12.4.6-0.2.hum1@src, grafana12.4-12.4.6-0.2.hum1@x86_64
  • RHSA-2026:47618 Released 2026-07-28 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images grafana13.1-13.1.1-0.2.hum1@aarch64, grafana13.1-13.1.1-0.2.hum1@src, grafana13.1-13.1.1-0.2.hum1@x86_64

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Ceph Storage 5AffectedNo fix yet: Fix deferred
Red Hat Ceph Storage 6AffectedNo fix yet: Fix deferred
Red Hat Ceph Storage 7AffectedNo fix yet: Fix deferred
Red Hat Ceph Storage 8AffectedNo fix yet: Fix deferred
Red Hat Ceph Storage 9AffectedNo fix yet: Fix deferred
Multicluster Global Hub 1.7.4Fixed RHSA-2026:95517
Red Hat Advanced Cluster Management for Kubernetes 2.13Fixed RHSA-2026:72885
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:54178
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:54243
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:54184
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:76795
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:67517
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:67518
Red Hat Hardened ImagesFixed RHSA-2026:47618, RHSA-2026:47619, RHSA-2026:68778
Not affected: 2 products
  • Multicluster Global Hub 1.7.4
  • Red Hat Advanced Cluster Management for Kubernetes 2.13

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42127
  2. 2026-10-03 Alias added: GHSA-3w66-95m3-8jxg
  3. 2026-10-07 Fix available: RHSA-2026:76795 · Red Hat
  4. 2026-10-07 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.4) · Red Hat
  5. 2026-11-06 Fix available: Multicluster Global Hub 1.7.4 · Red Hat
  6. 2026-11-06 Fix available: RHSA-2026:95517 · Red Hat

References

Advisory 2

Other 8

  • 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