CVE-2026-42207

{
  "id": "CVE-2026-42207",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-15T17:16:46.757",
  "lastModified": "2026-10-26T14:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to 20.18.0, Mage_ProductAlert_AddController::stockAction() reads the uenc query parameter and passes it directly to $this->_redirectUrl($backUrl) without calling $this->_isUrlInternal(). When the supplied product_id does not match any catalog product, the server issues an unvalidated HTTP 302 redirect to whatever URL was provided as uenc. This vulnerability is fixed in 20.18.0."
    },
    {
      "lang": "es",
      "value": "El Soporte a Largo Plazo (LTS) de Magento es un proyecto no oficial, impulsado por la comunidad, que proporciona una alternativa a la plataforma de comercio electrónico Magento Community Edition con un alto nivel de compatibilidad con versiones anteriores. Antes de la versión 20.18.0, Mage_ProductAlert_AddController::stockAction() lee el parámetro de consulta uenc y lo pasa directamente a $this  ->  _redirectUrl($backUrl) sin llamar a $this  ->  _isUrlInternal(). Cuando el product_id proporcionado no coincide con ningún producto del catálogo, el servidor emite una redirección HTTP 302 no validada a cualquier URL que se haya proporcionado como uenc. Esta vulnerabilidad se corrige en la versión 20.18.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "OpenMage",
          "product": "magento-lts",
          "versions": [
            {
              "version": "< 20.18.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-15T17:50:03.433120Z",
          "id": "CVE-2026-42207",
          "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-601"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-qpgq-5g92-j5q8",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-qpgq-5g92-j5q8",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}