CVE-2026-27696

{
  "id": "CVE-2026-27696",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-27696",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-25T14:51:00.509715Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.6,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "dgtlmoon",
          "product": "changedetection.io",
          "versions": [
            {
              "status": "affected",
              "version": "< 0.54.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-02-25T05:17:26.940",
  "references": [
    {
      "url": "https://github.com/dgtlmoon/changedetection.io/commit/fe7aa38c651d73fe5f41ce09855fa8f97193747b",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-3c45-4pj5-ch7m",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-3c45-4pj5-ch7m",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, changedetection.io is vulnerable to Server-Side Request Forgery (SSRF) because the URL validation function `is_safe_valid_url()` does not validate the resolved IP address of watch URLs against private, loopback, or link-local address ranges. An authenticated user (or any user when no password is configured, which is the default) can add a watch for internal network URLs. The application fetches these URLs server-side, stores the response content, and makes it viewable through the web UI — enabling full data exfiltration from internal services. Version 0.54.1 contains a fix for the issue."
    },
    {
      "lang": "es",
      "value": "changedetection.io es una herramienta gratuita de código abierto para la detección de cambios en páginas web. En versiones anteriores a la 0.54.1, changedetection.io es vulnerable a la Falsificación de Petición del Lado del Servidor (SSRF) porque la función de validación de URL 'is_safe_valid_url()' no valida la dirección IP resuelta de las URL de vigilancia frente a rangos de direcciones privadas, de bucle invertido o de enlace local. Un usuario autenticado (o cualquier usuario cuando no hay contraseña configurada, que es el valor predeterminado) puede añadir una vigilancia para URL de red internas. La aplicación obtiene estas URL del lado del servidor, almacena el contenido de la respuesta y lo hace visible a través de la interfaz de usuario web — lo que permite la exfiltración completa de datos de servicios internos. La versión 0.54.1 contiene una solución para el problema."
    }
  ],
  "lastModified": "2026-06-17T10:27:32.060",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:webtechnologies:changedetection:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "582BB3C2-9FD0-4217-A5DF-67ACC72BA029",
              "versionEndExcluding": "0.54.1"
            }
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          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}