FKIE_CVE-2026-4330

Vulnerability from fkie_nvd - Published: 2026-04-08 08:16 - Updated: 2026-07-24 20:10
Summary
The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to authorization bypass through user-controlled key in all versions up to, and including, 8.8.3. This is due to the plugin's AJAX handlers failing to validate that the user-supplied 'b2s_id' parameter belongs to the current user before performing UPDATE and DELETE operations. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify, reschedule, or delete other users' scheduled social media posts.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2178
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2183
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2273
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2322
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Post/Tools.php#L32
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Ship/Save.php#L190
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Loader.php#L2202
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2178
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2183
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2273
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2322
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Post/Tools.php#L32
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Ship/Save.php#L190
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Loader.php#L2202
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset/3494550/
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/f3eec9c6-fef9-4d6e-8328-51efb997c99c?source=cve
Impacted products
Vendor Product Version

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Blog2Social: Social Media Auto Post \u0026 Scheduler",
          "vendor": "pr-gateway",
          "versions": [
            {
              "lessThanOrEqual": "8.8.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Blog2Social: Social Media Auto Post \u0026 Scheduler plugin for WordPress is vulnerable to authorization bypass through user-controlled key in all versions up to, and including, 8.8.3. This is due to the plugin\u0027s AJAX handlers failing to validate that the user-supplied \u0027b2s_id\u0027 parameter belongs to the current user before performing UPDATE and DELETE operations. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify, reschedule, or delete other users\u0027 scheduled social media posts."
    },
    {
      "lang": "es",
      "value": "El plugin Blog2Social: Social Media Auto Post \u0026 Scheduler para WordPress es vulnerable a la omisi\u00f3n de autorizaci\u00f3n a trav\u00e9s de una clave controlada por el usuario en todas las versiones hasta la 8.8.3, inclusive. Esto se debe a que los manejadores AJAX del plugin no validan que el par\u00e1metro \u0027b2s_id\u0027 proporcionado por el usuario pertenezca al usuario actual antes de realizar operaciones de ACTUALIZACI\u00d3N y ELIMINACI\u00d3N. Esto hace posible que atacantes autenticados, con acceso de nivel Suscriptor y superior, modifiquen, reprogramen o eliminen las publicaciones programadas en redes sociales de otros usuarios."
    }
  ],
  "id": "CVE-2026-4330",
  "lastModified": "2026-07-24T20:10:00.147",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-4330",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-08T14:18:25.729120Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-08T08:16:23.733",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2178"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2183"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2273"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Ajax/Post.php#L2322"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Post/Tools.php#L32"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/B2S/Ship/Save.php#L190"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/tags/8.8.2/includes/Loader.php#L2202"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2178"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2183"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2273"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Ajax/Post.php#L2322"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Post/Tools.php#L32"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/B2S/Ship/Save.php#L190"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/blog2social/trunk/includes/Loader.php#L2202"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset/3494550/"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f3eec9c6-fef9-4d6e-8328-51efb997c99c?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}



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