CVE-2026-8609
An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denial of service).
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: 0.48%
- Percentil entre todas las CVEs puntuadas: 39
- Fecha de la puntuación: 5/10/2026
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 %
AV:N/AC:L/PR:N sin UI:R indica explotación remota sin autenticación (T1190). El ataque provoca agotamiento de memoria y crash del servicio, típico de T1499 (negación de servicio).
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-400
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-8609",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-8609",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-07-10T15:53:40.169487Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "security@grafana.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.3,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "LOW",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 1.4,
"exploitabilityScore": 3.9
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"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 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": "2026-07-10T16:16:39.510",
"references": [
{
"url": "https://grafana.com/security/security-advisories/cve-2026-8609",
"tags": [
"Vendor Advisory"
],
"source": "security@grafana.com"
}
],
"vulnStatus": "Analyzed",
"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-400"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denial of service)."
}
],
"lastModified": "2026-07-13T20:51:48.450",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B154BC07-0914-4E25-9D84-FB64205493F7",
"versionEndExcluding": "11.6.15",
"versionStartIncluding": "11.6.0"
},
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "052CFAA8-0386-43DF-869A-643997178E8D",
"versionEndExcluding": "12.2.9",
"versionStartIncluding": "12.2.0"
},
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C77AA4CC-A590-4948-A010-5A1154502E47",
"versionEndExcluding": "12.3.7",
"versionStartIncluding": "12.3.0"
},
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F820291A-C1C6-4DBC-8064-6133F16547C4",
"versionEndExcluding": "12.4.4",
"versionStartIncluding": "12.4.0"
},
{
"criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "643002A3-545F-4605-AAAF-EF55C5B14392",
"versionEndExcluding": "13.0.2",
"versionStartIncluding": "13.0.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "security@grafana.com"
}