CVE-2026-33378

Using the $__timeGroup macro, one can achieve an OOM by overloading the server. This requires a SQL datasource. If the server is set up to auto-restart, the impact is minimal or non-existent, as the attack can take upwards of half an hour to crash the server.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://grafana.com/security/security-advisories/cve-2026-33378	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:grafana:grafana::::::::
	cpe:2.3:a:grafana:grafana::::::::
	cpe:2.3:a:grafana:grafana::::::::
	cpe:2.3:a:grafana:grafana::::::::
	cpe:2.3:a:grafana:grafana:11.6.14:-::::::
	cpe:2.3:a:grafana:grafana:11.6.14:security01::::::
	cpe:2.3:a:grafana:grafana:12.2.8:-::::::
	cpe:2.3:a:grafana:grafana:12.2.8:security01::::::
	cpe:2.3:a:grafana:grafana:12.3.6:-::::::
	cpe:2.3:a:grafana:grafana:12.3.6:security01::::::
	cpe:2.3:a:grafana:grafana:12.4.3:-::::::
	cpe:2.3:a:grafana:grafana:13.0.0:::::::*
	cpe:2.3:a:grafana:grafana:13.0.1:-::::::

History

No history.

Information

Published : 2026-05-13 20:16

Updated : 2026-06-17 13:20

NVD link : CVE-2026-33378

Mitre link : CVE-2026-33378

CVE.ORG link : CVE-2026-33378

JSON object : View

Products Affected

grafana

grafana

CWE

CWE-400

Uncontrolled Resource Consumption

{"id": "CVE-2026-33378", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33378", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-14T12:33:44.094482Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@grafana.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@grafana.com", "affectedData": [{"vendor": "Grafana", "product": "Grafana OSS", "versions": [{"status": "affected", "version": "8.0.0", "versionType": "semver", "lessThanOrEqual": "11.6.14"}, {"status": "affected", "version": "11.6.14", "lessThan": "11.6.14+security-04", "versionType": "custom"}, {"status": "affected", "version": "12.0.0", "versionType": "semver", "lessThanOrEqual": "12.2.8"}, {"status": "affected", "version": "12.2.8", "lessThan": "12.2.8+security-04", "versionType": "custom"}, {"status": "affected", "version": "12.3.0", "versionType": "semver", "lessThanOrEqual": "12.3.6"}, {"status": "affected", "version": "12.3.6", "lessThan": "12.3.6+security-04", "versionType": "custom"}, {"status": "affected", "version": "12.4.0", "versionType": "semver", "lessThanOrEqual": "12.4.3"}, {"status": "affected", "version": "12.4.3", "lessThan": "12.4.3+security-02", "versionType": "custom"}, {"status": "affected", "version": "13.0.0", "versionType": "semver", "lessThanOrEqual": "13.0.1"}, {"status": "affected", "version": "13.0.1", "lessThan": "13.0.1+security-01", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-13T20:16:20.583", "references": [{"url": "https://grafana.com/security/security-advisories/cve-2026-33378", "tags": ["Vendor Advisory"], "source": "security@grafana.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "Using the $__timeGroup macro, one can achieve an OOM by overloading the server. This requires a SQL datasource. If the server is set up to auto-restart, the impact is minimal or non-existent, as the attack can take upwards of half an hour to crash the server."}], "lastModified": "2026-06-17T13:20:16.740", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8E135E10-C076-4250-A33D-ACFE7A77DB9D", "versionEndExcluding": "11.6.14", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "80B49F3F-8139-4DEB-971F-1B4F05BDE98E", "versionEndExcluding": "12.2.8", "versionStartIncluding": "12.0.0"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "870FE01F-86F1-4734-9CC3-6FC9AF3012C5", "versionEndExcluding": "12.3.6", "versionStartIncluding": "12.3.0"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4451FBC6-6277-4DD8-B143-0DAE82175D9A", "versionEndExcluding": "12.4.3", "versionStartIncluding": "12.4.0"}, {"criteria": "cpe:2.3:a:grafana:grafana:11.6.14:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "548C63DC-4E7F-4D9E-B2F0-AB24A66E0F7F"}, {"criteria": "cpe:2.3:a:grafana:grafana:11.6.14:security01:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5F103470-1371-498E-9442-11EA7C2E3A6B"}, {"criteria": "cpe:2.3:a:grafana:grafana:12.2.8:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4ACC0DB6-8BC4-4975-AD26-D41F69571EF6"}, {"criteria": "cpe:2.3:a:grafana:grafana:12.2.8:security01:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9EBE773D-17BB-4402-B0B8-74D3DD79B32C"}, {"criteria": "cpe:2.3:a:grafana:grafana:12.3.6:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6A58801D-1713-4A52-8713-9DD31F75698D"}, {"criteria": "cpe:2.3:a:grafana:grafana:12.3.6:security01:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5C930B25-FD06-477C-B226-DEB486A46DAA"}, {"criteria": "cpe:2.3:a:grafana:grafana:12.4.3:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "172F03B1-E693-4EF3-90A0-D40773E4ACB4"}, {"criteria": "cpe:2.3:a:grafana:grafana:13.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0F0B8E4F-ADE7-4594-9241-966B1F0BC440"}, {"criteria": "cpe:2.3:a:grafana:grafana:13.0.1:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2AD87DC5-DF20-4993-A11B-91EBB313A40A"}], "operator": "OR"}]}], "sourceIdentifier": "security@grafana.com"}