GHSA-XGJ6-M977-PGHJ

Vulnerability from github – Published: 2026-06-24 09:30 – Updated: 2026-06-24 09:30
VLAI
Details

The Welcome Software Publishing plugin for WordPress is vulnerable to Arbitrary Options Update in all versions up to and including 0.0.31. This is due to a missing capability check in the nc_setOption() function, which is exposed via the nc.setOption XML-RPC method. The function authenticates the user via $wp_xmlrpc_server->login() (verifying credentials are valid) but does not perform any authorization check such as current_user_can('manage_options'). This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary WordPress options via XML-RPC requests. This can be leveraged to change the default_role option to 'administrator' and then register a new administrator account, achieving full privilege escalation and site takeover.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-4297"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T07:16:27Z",
    "severity": "HIGH"
  },
  "details": "The Welcome Software Publishing plugin for WordPress is vulnerable to Arbitrary Options Update in all versions up to and including 0.0.31. This is due to a missing capability check in the nc_setOption() function, which is exposed via the nc.setOption XML-RPC method. The function authenticates the user via $wp_xmlrpc_server-\u003elogin() (verifying credentials are valid) but does not perform any authorization check such as current_user_can(\u0027manage_options\u0027). This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary WordPress options via XML-RPC requests. This can be leveraged to change the default_role option to \u0027administrator\u0027 and then register a new administrator account, achieving full privilege escalation and site takeover.",
  "id": "GHSA-xgj6-m977-pghj",
  "modified": "2026-06-24T09:30:46Z",
  "published": "2026-06-24T09:30:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4297"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/newscred-publishing/tags/0.0.31/newscred.php#L264"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/newscred-publishing/tags/0.0.31/newscred.php#L265"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/newscred-publishing/tags/0.0.31/newscred.php#L272"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/newscred-publishing/tags/0.0.31/newscred.php#L44"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/newscred-publishing/trunk/newscred.php#L264"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/newscred-publishing/trunk/newscred.php#L265"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/newscred-publishing/trunk/newscred.php#L272"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/newscred-publishing/trunk/newscred.php#L44"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/47e53fd3-4e3f-433a-8e70-3a58c864184a?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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