CVE-2026-53520

{
  "id": "CVE-2026-53520",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-12T22:16:52.097",
  "lastModified": "2026-10-25T23:10:00.167",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been patched in version 2.1.0."
    },
    {
      "lang": "es",
      "value": "Nezha Monitoring es una herramienta autoalojable, ligera, de monitoreo de servidores y sitios web, y de O&M. Desde la versión 2.0.14 hasta antes de la versión 2.1.0, los usuarios autenticados pueden reclamar el Host del panel de control a través de NAT y tomar el control de todo el enrutamiento del panel de control. Este problema ha sido parcheado en la versión 2.1.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "nezhahq",
          "product": "nezha",
          "versions": [
            {
              "version": ">= 2.0.14, < 2.1.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-15T13:01:12.587436Z",
          "id": "CVE-2026-53520",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/nezhahq/nezha/security/advisories/GHSA-x6fg-52vr-hj4w",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/nezhahq/nezha/security/advisories/GHSA-x6fg-52vr-hj4w",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}