FKIE_CVE-2026-14199
Vulnerability from fkie_nvd - Published: 2026-09-02 16:17 - Updated: 2026-09-15 18:23
Severity
7.1 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.1 (High) - CVSS:3.1/
Summary
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).
References
| URL | Tags | ||
|---|---|---|---|
| security@grafana.com | https://grafana.com/security/security-advisories/cve-2026-14199 | Vendor Advisory |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Grafana Enterprise",
"vendor": "Grafana",
"versions": [
{
"lessThanOrEqual": "11.6.17",
"status": "affected",
"version": "11.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "12.2.11",
"status": "affected",
"version": "12.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "12.3.11",
"status": "affected",
"version": "12.3.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "12.4.9",
"status": "affected",
"version": "12.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "13.0.7",
"status": "affected",
"version": "13.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "13.1.4",
"status": "affected",
"version": "13.1.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "13.2.0",
"status": "affected",
"version": "13.2.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Grafana OSS",
"vendor": "Grafana",
"versions": [
{
"lessThanOrEqual": "11.6.17",
"status": "affected",
"version": "11.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "12.2.11",
"status": "affected",
"version": "12.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "12.3.11",
"status": "affected",
"version": "12.3.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "12.4.9",
"status": "affected",
"version": "12.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "13.0.7",
"status": "affected",
"version": "13.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "13.1.4",
"status": "affected",
"version": "13.1.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "13.2.0",
"status": "affected",
"version": "13.2.0",
"versionType": "semver"
}
]
}
],
"source": "security@grafana.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "8D828FF4-D41A-4D39-9293-1A65FB9CE0DA",
"versionEndExcluding": "11.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "426531C3-A27D-4DA7-81EA-00DAE298707A",
"versionEndExcluding": "13.0.0",
"versionStartIncluding": "12.4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "46FC7B23-2EB6-4335-BE5B-E32512E9D30C",
"versionEndExcluding": "13.1.0",
"versionStartIncluding": "13.0.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*",
"matchCriteriaId": "016BB9D1-BC78-4AC1-913C-10B535CF0447",
"versionEndExcluding": "13.2.0",
"versionStartIncluding": "13.1.5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"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\u0027s, while that user\u0027s cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing)."
}
],
"id": "CVE-2026-14199",
"lastModified": "2026-09-15T18:23:02.127",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 5.5,
"source": "security@grafana.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.2,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-14199",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-02T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-09-02T16:17:14.517",
"references": [
{
"source": "security@grafana.com",
"tags": [
"Vendor Advisory"
],
"url": "https://grafana.com/security/security-advisories/cve-2026-14199"
}
],
"sourceIdentifier": "security@grafana.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-290"
},
{
"lang": "en",
"value": "CWE-863"
},
{
"lang": "en",
"value": "CWE-1023"
}
],
"source": "security@grafana.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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