--- id: CVE-2026-42127 title: >- 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 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 serv… severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H' cwe: - CWE-400 - CWE-770 vendor: grafana product: grafana affected: - grafana <= 11.6.14 - 'grafana >= 12.2.0, <= 12.2.8' - 'grafana >= 12.3.0, <= 12.3.6' - 'grafana >= 12.4.0, <= 12.4.3' - 'grafana >= 13.0.0, <= 13.0.1' published: '2026-06-22' updated: '2026-07-10' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-42127' references: - url: 'https://grafana.com/security/security-advisories/cve-2026-42127' label: security@grafana.com - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42127.json - url: 'https://access.redhat.com/security/cve/CVE-2026-42127' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2491449' - url: 'https://www.cve.org/CVERecord?id=CVE-2026-42127' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-42127' - url: 'https://access.redhat.com/errata/RHSA-2026:54178' - url: 'https://access.redhat.com/errata/RHSA-2026:67517' - url: 'https://access.redhat.com/errata/RHSA-2026:67518' - url: 'https://access.redhat.com/errata/RHSA-2026:54243' - url: 'https://access.redhat.com/errata/RHSA-2026:54184' - url: 'https://github.com/grafana/grafana/pull/125789' - url: >- https://github.com/grafana/grafana/commit/82ef13993059351bf21de35b8488bbd9b42df4f4 - url: 'https://github.com/grafana/grafana/releases/tag/v11.6.15' - url: 'https://github.com/grafana/grafana/releases/tag/v12.2.9' - url: 'https://github.com/grafana/grafana/releases/tag/v12.3.7' - url: 'https://github.com/grafana/grafana/releases/tag/v12.4.4' - url: 'https://github.com/grafana/grafana/releases/tag/v13.0.2' - url: 'https://github.com/advisories/GHSA-3w66-95m3-8jxg' - url: 'https://github.com/grafana/grafana' - url: 'https://access.redhat.com/errata/RHSA-2026:47619' - url: 'https://access.redhat.com/errata/RHSA-2026:47618' - url: 'https://access.redhat.com/errata/RHSA-2026:68778' tags: - nvd - csaf - vex - red-hat - ghsa - go - osv epss: 0.00432 epssPercentile: 0.34933 ingestedAt: '2026-07-11T13:13:24.734Z' patched: - enterprise_linux_appstream_v_10 aliases: - GHSA-3w66-95m3-8jxg - BIT-grafana-2026-42127 ecosystem: go --- ## Overview 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. ## Affected - `grafana <= 11.6.14` - `grafana >= 12.2.0, <= 12.2.8` - `grafana >= 12.3.0, <= 12.3.6` - `grafana >= 12.4.0, <= 12.4.3` - `grafana >= 13.0.0, <= 13.0.1` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges. ## Vendor advisories - **RHSA-2026:54178** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-08-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:54178) - **Red Hat VEX** · Important · affected: 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, … · no fix planned: Red Hat Ceph Storage 5, Red Hat Ceph Storage 6, Red Hat Ceph Storage 7, Red Hat Ceph Storage 8, … · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42127.json) - **RHSA-2026:67517** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0) · released 2026-09-15 · [advisory](https://access.redhat.com/errata/RHSA-2026:67517) - **RHSA-2026:67518** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6) · released 2026-09-15 · [advisory](https://access.redhat.com/errata/RHSA-2026:67518) - **RHSA-2026:54243** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8) · released 2026-08-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:54243) - **RHSA-2026:54184** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-08-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:54184) - **RHSA-2026:47619** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-07-28 · [advisory](https://access.redhat.com/errata/RHSA-2026:47619) - **RHSA-2026:47618** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-07-28 · [advisory](https://access.redhat.com/errata/RHSA-2026:47618) - **RHSA-2026:68778** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68778) ## Package advisory (CVE-2026-42127) Affected packages: - `github.com/grafana/grafana >= 2.0.0-beta1, < 11.6.15` - `github.com/grafana/grafana >= 12.0.0, < 12.2.9` - `github.com/grafana/grafana >= 12.3.0, < 12.3.7` - `github.com/grafana/grafana >= 12.4.0, < 12.4.4` - `github.com/grafana/grafana >= 13.0.0, < 13.0.2` - `github.com/grafana/grafana < 1.9.2-0.20260616075434-82ef13993059` Patched in: - `github.com/grafana/grafana 1.9.2-0.20260616075434-82ef13993059` Source: https://github.com/advisories/GHSA-3w66-95m3-8jxg