CVE-2026-42127

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://grafana.com/security/security-advisories/cve-2026-42127	Broken Link

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:grafana:grafana:::::enterprise:::*
	cpe:2.3:a:grafana:grafana:::::enterprise:::*
	cpe:2.3:a:grafana:grafana:::::enterprise:::*
	cpe:2.3:a:grafana:grafana:::::enterprise:::*
	cpe:2.3:a:grafana:grafana:::::enterprise:::*

History

30 Jun 2026, 14:49

Type	Values Removed	Values Added
CPE		cpe:2.3:a:grafana:grafana:::::enterprise:::*
First Time		Grafana Grafana grafana
References	~~() https://grafana.com/security/security-advisories/cve-2026-42127 -~~	() https://grafana.com/security/security-advisories/cve-2026-42127 - Broken Link

22 Jun 2026, 19:16

Type	Values Removed	Values Added
CWE		CWE-770

22 Jun 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-22 18:16

Updated : 2026-06-30 14:49

NVD link : CVE-2026-42127

Mitre link : CVE-2026-42127

CVE.ORG link : CVE-2026-42127

JSON object : View

Products Affected

grafana

grafana

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

{"id": "CVE-2026-42127", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"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"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@grafana.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@grafana.com", "affectedData": [{"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"}]}], "published": "2026-06-22T18:16:37.430", "references": [{"url": "https://grafana.com/security/security-advisories/cve-2026-42127", "tags": ["Broken Link"], "source": "security@grafana.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-06-30T14:49:20.790", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "BCCF12AE-CA32-42A8-9837-4EF45704D150", "versionEndIncluding": "11.6.14"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "E60EEF4D-DD52-4DB1-9E58-59B7EE4D1D9E", "versionEndIncluding": "12.2.8", "versionStartIncluding": "12.2.0"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "F0AF4DB6-120E-44EE-BF4D-E41FCBE88A77", "versionEndIncluding": "12.3.6", "versionStartIncluding": "12.3.0"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "8F22EAA5-D510-4261-9A3F-6AC315378F23", "versionEndIncluding": "12.4.3", "versionStartIncluding": "12.4.0"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "16FCDFDF-CD01-4A1C-B6DB-9C4B116374FB", "versionEndIncluding": "13.0.1", "versionStartIncluding": "13.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@grafana.com"}