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
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.43%
- Percentil entre todas las CVEs puntuadas: 35
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access95 % - Impacto principal
T1499Endpoint Denial of Serviceimpact90 %
Vector AV:N/PR:N/UI:N indica explotación remota sin autenticación. CWE-400/770 y descripción de payload JSON sin límite → DoS por agotamiento de memoria (T1499).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-400
- CWE-770
Referencias
JSON original (NVD)
Mostrar
{
"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": "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"
}
]
}
],
"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": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "security@grafana.com",
"description": [
{
"lang": "en",
"value": "CWE-400"
}
]
},
{
"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": "2026-07-10T16:16:30.967",
"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"
}