CVE-2026-2433

{
  "id": "CVE-2026-2433",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-2433",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-09T17:31:34.331517Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@wordfence.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@wordfence.com",
      "affectedData": [
        {
          "vendor": "rebelcode",
          "product": "RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "semver",
              "lessThanOrEqual": "5.0.11"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-03-07T08:16:11.193",
  "references": [
    {
      "url": "https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/tags/5.0.10/core/js/admin-shell.js#L153",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/tags/5.0.10/core/js/admin-shell.js#L58",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/trunk/core/js/admin-shell.js#L153",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/trunk/core/js/admin-shell.js#L58",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3473511%40wp-rss-aggregator%2Ftrunk&old=3439393%40wp-rss-aggregator%2Ftrunk&sfp_email=&sfph_mail=",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/311960e7-c4b4-4638-980f-1e08ffa621ba?source=cve",
      "source": "security@wordfence.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@wordfence.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via postMessage in all versions up to, and including, 5.0.11. This is due to the plugin's admin-shell.js registering a global message event listener without origin validation (missing event.origin check) and directly passing user-controlled URLs to window.open() without URL scheme validation. This makes it possible for unauthenticated attackers to execute arbitrary JavaScript in the context of an authenticated administrator's session by tricking them into visiting a malicious website that sends crafted postMessage payloads to the plugin's admin page."
    },
    {
      "lang": "es",
      "value": "El plugin RSS Aggregator – RSS Import, News Feeds, Feed to Post y Autoblogging para WordPress es vulnerable a cross-site scripting basado en DOM a través de postMessage en todas las versiones hasta la 5.0.11, inclusive. Esto se debe a que el archivo admin-shell.js del plugin registra un oyente de eventos de mensaje global sin validación de origen (falta la comprobación de event.origin) y pasa directamente URLs controladas por el usuario a window.open() sin validación del esquema de URL. Esto hace posible que atacantes no autenticados ejecuten JavaScript arbitrario en el contexto de la sesión de un administrador autenticado al engañarlos para que visiten un sitio web malicioso que envía cargas útiles postMessage manipuladas a la página de administración del plugin."
    }
  ],
  "lastModified": "2026-06-17T10:30:56.840",
  "sourceIdentifier": "security@wordfence.com"
}