CVE-2026-53519

{
  "id": "CVE-2026-53519",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-12T22:16:51.953",
  "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. Prior to version 2.0.13, fallbackToFrontend in the dashboard's NoRoute handler treats any URL whose raw string starts with /dashboard as an admin-frontend asset request. The check uses strings.HasPrefix, not a path-segment match, so the input /dashboard../data/config.yaml is accepted; strings.TrimPrefix leaves ../data/config.yaml; and path.Join(\"admin-dist\", \"../data/config.yaml\") normalizes to data/config.yaml — which os.Stat finds and http.ServeFile returns. No authentication required. This issue has been patched in version 2.0.13."
    },
    {
      "lang": "es",
      "value": "Nezha Monitoring es una herramienta autoalojable y ligera para el monitoreo de servidores y sitios web, y para O&M. Antes de la versión 2.0.13, fallbackToFrontend en el gestor NoRoute del panel de control trata cualquier URL cuya cadena de texto sin procesar comience con /dashboard como una solicitud de recurso del frontend de administración. La verificación utiliza strings.HasPrefix, no una coincidencia de segmento de ruta, por lo que la entrada /dashboard.. / data/config.yaml es aceptada; strings.TrimPrefix deja .. / data/config.yaml; y path.Join(“admin-dist”, “.. / data/config.yaml”) se normaliza a data/config.yaml - que os.Stat encuentra y http.ServeFile devuelve. No se requiere autenticación. Este problema ha sido parcheado en la versión 2.0.13."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "nezhahq",
          "product": "nezha",
          "versions": [
            {
              "version": "< 2.0.13",
              "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:H/I:H/A:N",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-15T18:26:37.174737Z",
          "id": "CVE-2026-53519",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/nezhahq/nezha/security/advisories/GHSA-5c25-7vpj-9mqh",
      "source": "[email protected]"
    }
  ]
}