CVE-2026-8609

{
  "id": "CVE-2026-8609",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-10T16:16:39.510",
  "lastModified": "2026-10-25T15:10:00.147",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "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)."
    },
    {
      "lang": "es",
      "value": "Un atacante no autenticado puede llamar repetidamente a la ruta de inicio de sesión OAuth de Grafana con valores únicos, causando un crecimiento ilimitado de la memoria que puede agotar la memoria con el tiempo y bloquear la instancia de Grafana (denegación de servicio)."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Grafana",
          "product": "Grafana OSS",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "11.6.0",
              "lessThanOrEqual": "11.6.14",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.2.0",
              "lessThanOrEqual": "12.2.8",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.3.0",
              "lessThanOrEqual": "12.3.6",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.4.0",
              "lessThanOrEqual": "12.4.3",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "13.0.0",
              "lessThanOrEqual": "13.0.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      },
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-10T15:53:40.169487Z",
          "id": "CVE-2026-8609",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
              "versionStartIncluding": "11.6.0",
              "versionEndExcluding": "11.6.15",
              "matchCriteriaId": "B154BC07-0914-4E25-9D84-FB64205493F7"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
              "versionStartIncluding": "12.2.0",
              "versionEndExcluding": "12.2.9",
              "matchCriteriaId": "052CFAA8-0386-43DF-869A-643997178E8D"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
              "versionStartIncluding": "12.3.0",
              "versionEndExcluding": "12.3.7",
              "matchCriteriaId": "C77AA4CC-A590-4948-A010-5A1154502E47"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
              "versionStartIncluding": "12.4.0",
              "versionEndExcluding": "12.4.4",
              "matchCriteriaId": "F820291A-C1C6-4DBC-8064-6133F16547C4"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
              "versionStartIncluding": "13.0.0",
              "versionEndExcluding": "13.0.2",
              "matchCriteriaId": "643002A3-545F-4605-AAAF-EF55C5B14392"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://grafana.com/security/security-advisories/cve-2026-8609",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}