CVE-2026-42127
published 2026-06-22CVE-2026-42127: The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory…
PriorityP345high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.43%
36.1th percentile
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
28 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | grafana_grafana | >= 0 < 1.9.2-0.20260616075434-82ef13993059 | 1.9.2-0.20260616075434-82ef13993059 |
| github.com | grafana_grafana | >= 12.0.0 | — |
| github.com | grafana_grafana | >= 12.3.0 | — |
| github.com | grafana_grafana | >= 12.4.0 | — |
| github.com | grafana_grafana | >= 13.0.0 | — |
| github.com | grafana_grafana | >= 2.0.0-beta1 | — |
| grafana | grafana | <= 11.6.14 | — |
| grafana | grafana | — | — |
| grafana | grafana | 12.2.0 – 12.2.8 | — |
| grafana | grafana | 12.3.0 – 12.3.6 | — |
| grafana | grafana | 12.4.0 – 12.4.3 | — |
| grafana | grafana | 13.0.0 – 13.0.1 | — |
| grafana | grafana_enterprise | 11.6.0 – 11.6.14 | — |
| grafana | grafana_enterprise | 12.2.0 – 12.2.8 | — |
| grafana | grafana_enterprise | 12.3.0 – 12.3.6 | — |
| grafana | grafana_enterprise | 12.4.0 – 12.4.3 | — |
| grafana | grafana_enterprise | 13.0.0 – 13.0.1 | — |
| grafana | grafana_oss | 11.6.0 – 11.6.14 | — |
| grafana | grafana_oss | 12.2.0 – 12.2.8 | — |
| grafana | grafana_oss | 12.3.0 – 12.3.6 | — |
| grafana | grafana_oss | 12.4.0 – 12.4.3 | — |
| grafana | grafana_oss | 13.0.0 – 13.0.1 | — |
| multicluster-globalhub | multicluster-globalhub-grafana-rhel9 | — | — |
| rhacm2 | acm-grafana-rhel9 | — | — |
| rhceph | grafana-rhel10 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat7.5HIGH
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GHSA
Grafana: Pre-authentication denial of service in the public dashboard query handler
ghsa·2026-06-22
CVE-2026-42127 [HIGH] CWE-400 Grafana: Pre-authentication denial of service in the public dashboard query handler
Grafana: Pre-authentication denial of service in the public dashboard query handler
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.
GHSA
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 payl
ghsa_unreviewed·2026-06-22
CVE-2026-42127 [HIGH] CWE-770 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 payl
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.
VulDB
Grafana Enterprise/OSS Public Dashboard Query Endpoint denial of service
vuldb·2026-06-22·CVSS 7.5
CVE-2026-42127 [HIGH] Grafana Enterprise/OSS Public Dashboard Query Endpoint denial of service
A vulnerability classified as problematic has been found in Grafana Enterprise and OSS. The affected element is an unknown function of the component Public Dashboard Query Endpoint. This manipulation causes denial of service.
This vulnerability appears as CVE-2026-42127. The attack may be initiated remotely. There is no available exploit.
Red Hat
grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads
vendor_redhat·2026-06-22·CVSS 7.5
CVE-2026-42127 [HIGH] CWE-770 grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads
grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads
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.
A flaw was found in Grafana. An unauthenticated attacker can exploit the public dashboard query endpoint by sending arbitrarily large JSON payloads. This vulnerability, caused by a lack of request body size limits, triggers excessive memory allocation, leading to a denial of service through memory exhaustion.
Statement: This is an Importan
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-42127 grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads [fedora-all]
bugzilla·2026-09-09·CVSS 7.5
CVE-2026-42127 [HIGH] CVE-2026-42127 grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads [fedora-all]
CVE-2026-42127 grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-42127 grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads
bugzilla·2026-06-22·CVSS 7.5
CVE-2026-42127 [HIGH] CVE-2026-42127 grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads
CVE-2026-42127 grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads
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.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2026:54184 https://access.redhat.com/errata/RHSA-2026:54184
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2026:54243 https://access.redhat.com/errata/RHSA-2026:5424
2026-06-22
Published