CVE-2026-14199

Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://grafana.com/security/security-advisories/cve-2026-14199	Vendor Advisory

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:::*

History

No history.

Information

Published : 2026-09-02 16:17

Updated : 2026-09-15 18:23

NVD link : CVE-2026-14199

Mitre link : CVE-2026-14199

CVE.ORG link : CVE-2026-14199

JSON object : View

Products Affected

grafana

grafana

CWE

CWE-290

Authentication Bypass by Spoofing

CWE-863

Incorrect Authorization

CWE-1023

Incomplete Comparison with Missing Factors

{"id": "CVE-2026-14199", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-14199", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-02T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@grafana.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 1.6}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@grafana.com", "affectedData": [{"vendor": "Grafana", "product": "Grafana Enterprise", "versions": [{"status": "affected", "version": "11.0.0", "versionType": "semver", "lessThanOrEqual": "11.6.17"}, {"status": "affected", "version": "12.0.0", "versionType": "semver", "lessThanOrEqual": "12.2.11"}, {"status": "affected", "version": "12.3.0", "versionType": "semver", "lessThanOrEqual": "12.3.11"}, {"status": "affected", "version": "12.4.0", "versionType": "semver", "lessThanOrEqual": "12.4.9"}, {"status": "affected", "version": "13.0.0", "versionType": "semver", "lessThanOrEqual": "13.0.7"}, {"status": "affected", "version": "13.1.0", "versionType": "semver", "lessThanOrEqual": "13.1.4"}, {"status": "affected", "version": "13.2.0", "versionType": "semver", "lessThanOrEqual": "13.2.0"}], "defaultStatus": "unaffected"}, {"vendor": "Grafana", "product": "Grafana OSS", "versions": [{"status": "affected", "version": "11.0.0", "versionType": "semver", "lessThanOrEqual": "11.6.17"}, {"status": "affected", "version": "12.0.0", "versionType": "semver", "lessThanOrEqual": "12.2.11"}, {"status": "affected", "version": "12.3.0", "versionType": "semver", "lessThanOrEqual": "12.3.11"}, {"status": "affected", "version": "12.4.0", "versionType": "semver", "lessThanOrEqual": "12.4.9"}, {"status": "affected", "version": "13.0.0", "versionType": "semver", "lessThanOrEqual": "13.0.7"}, {"status": "affected", "version": "13.1.0", "versionType": "semver", "lessThanOrEqual": "13.1.4"}, {"status": "affected", "version": "13.2.0", "versionType": "semver", "lessThanOrEqual": "13.2.0"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-02T16:17:14.517", "references": [{"url": "https://grafana.com/security/security-advisories/cve-2026-14199", "tags": ["Vendor Advisory"], "source": "security@grafana.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@grafana.com", "description": [{"lang": "en", "value": "CWE-290"}, {"lang": "en", "value": "CWE-863"}, {"lang": "en", "value": "CWE-1023"}]}], "descriptions": [{"lang": "en", "value": "Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing)."}], "lastModified": "2026-09-15T18:23:02.127", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "8D828FF4-D41A-4D39-9293-1A65FB9CE0DA", "versionEndExcluding": "11.0.0"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "426531C3-A27D-4DA7-81EA-00DAE298707A", "versionEndExcluding": "13.0.0", "versionStartIncluding": "12.4.10"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "46FC7B23-2EB6-4335-BE5B-E32512E9D30C", "versionEndExcluding": "13.1.0", "versionStartIncluding": "13.0.8"}, {"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "016BB9D1-BC78-4AC1-913C-10B535CF0447", "versionEndExcluding": "13.2.0", "versionStartIncluding": "13.1.5"}], "operator": "OR"}]}], "sourceIdentifier": "security@grafana.com"}