CVE-2026-42127
Pre-authentication denial of service in the public dashboard query endpoint
Description
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.
INFO
Published Date :
June 22, 2026, 6:16 p.m.
Last Modified :
July 10, 2026, 4:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Implement request body size limits for the query endpoint.
- Validate and sanitize all incoming JSON payloads.
- Monitor memory usage under load conditions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-42127.
| URL | Resource |
|---|---|
| https://grafana.com/security/security-advisories/cve-2026-42127 | Broken Link |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-42127 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-42127
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-42127 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-42127 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added CWE CWE-400 Changed Affected [{'vendor': 'Grafana', 'product': 'Grafana Enterprise', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '11.6.14'}, {'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '12.2.8'}, {'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '12.3.6'}, {'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '12.4.3'}, {'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '13.0.1'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'Grafana OSS', 'versions': [{'status': 'affected', 'version': '11.6.0', 'versionType': 'semver', 'lessThanOrEqual': '11.6.14'}, {'status': 'affected', 'version': '12.2.0', 'versionType': 'semver', 'lessThanOrEqual': '12.2.8'}, {'status': 'affected', 'version': '12.3.0', 'versionType': 'semver', 'lessThanOrEqual': '12.3.6'}, {'status': 'affected', 'version': '12.4.0', 'versionType': 'semver', 'lessThanOrEqual': '12.4.3'}, {'status': 'affected', 'version': '13.0.0', 'versionType': 'semver', 'lessThanOrEqual': '13.0.1'}], 'defaultStatus': 'unaffected'}] [{'vendor': 'Grafana', 'product': 'Grafana Enterprise', 'versions': [{'status': 'affected', 'version': '11.6.0', 'versionType': 'semver', 'lessThanOrEqual': '11.6.14'}, {'status': 'affected', 'version': '12.2.0', 'versionType': 'semver', 'lessThanOrEqual': '12.2.8'}, {'status': 'affected', 'version': '12.3.0', 'versionType': 'semver', 'lessThanOrEqual': '12.3.6'}, {'status': 'affected', 'version': '12.4.0', 'versionType': 'semver', 'lessThanOrEqual': '12.4.3'}, {'status': 'affected', 'version': '13.0.0', 'versionType': 'semver', 'lessThanOrEqual': '13.0.1'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'Grafana OSS', 'versions': [{'status': 'affected', 'version': '11.6.0', 'versionType': 'semver', 'lessThanOrEqual': '11.6.14'}, {'status': 'affected', 'version': '12.2.0', 'versionType': 'semver', 'lessThanOrEqual': '12.2.8'}, {'status': 'affected', 'version': '12.3.0', 'versionType': 'semver', 'lessThanOrEqual': '12.3.6'}, {'status': 'affected', 'version': '12.4.0', 'versionType': 'semver', 'lessThanOrEqual': '12.4.3'}, {'status': 'affected', 'version': '13.0.0', 'versionType': 'semver', 'lessThanOrEqual': '13.0.1'}], 'defaultStatus': 'unaffected'}] -
Initial Analysis by [email protected]
Jun. 30, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:* versions up to (including) 11.6.14 *cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:* versions from (including) 12.3.0 up to (including) 12.3.6 *cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:* versions from (including) 12.4.0 up to (including) 12.4.3 *cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:* versions from (including) 13.0.0 up to (including) 13.0.1 *cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:* versions from (including) 12.2.0 up to (including) 12.2.8 Added Reference Type Grafana Labs: https://grafana.com/security/security-advisories/cve-2026-42127 Types: Broken Link -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 22, 2026
Action Type Old Value New Value Added CWE CWE-770 Added SSVC {'id': 'CVE-2026-42127', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-22T17:28:16.184877Z'} -
New CVE Received by [email protected]
Jun. 22, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Grafana', 'product': 'Grafana Enterprise', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '11.6.14'}, {'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '12.2.8'}, {'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '12.3.6'}, {'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '12.4.3'}, {'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '13.0.1'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Grafana', 'product': 'Grafana OSS', 'versions': [{'status': 'affected', 'version': '11.6.0', 'versionType': 'semver', 'lessThanOrEqual': '11.6.14'}, {'status': 'affected', 'version': '12.2.0', 'versionType': 'semver', 'lessThanOrEqual': '12.2.8'}, {'status': 'affected', 'version': '12.3.0', 'versionType': 'semver', 'lessThanOrEqual': '12.3.6'}, {'status': 'affected', 'version': '12.4.0', 'versionType': 'semver', 'lessThanOrEqual': '12.4.3'}, {'status': 'affected', 'version': '13.0.0', 'versionType': 'semver', 'lessThanOrEqual': '13.0.1'}], 'defaultStatus': 'unaffected'}] Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added Reference https://grafana.com/security/security-advisories/cve-2026-42127