GHSA-H282-RVGQ-85QJ

Vulnerability from github – Published: 2026-10-01 06:31 – Updated: 2026-10-01 06:31
VLAI
Details

The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.8.0 This is due to a chain of missing input neutralization and output escaping across the /mwai-ui/v1/chats/submit REST endpoint, the PHP error-log parser (MeowKit_MWAI_Helpers::php_error_logs), the Advisor task (Meow_MWAI_Modules_Advisor::run_advisor), and the Advisor dashboard widget (advisor_metabox): the server-parameter denylist in chat_submit strips only exact key names such as 'model' while convert_keys() later canonicalizes 'model_' back to 'model', allowing an unauthenticated caller to place an attacker-controlled string (including CR/LF) into $query->model; final_checks() throws an Exception whose message embeds that raw string, and the non-streaming, non-admin catch branch writes it to the PHP error log unmodified — creating a forged log line that the plugin's own parser subsequently returns as recent PHP-error content; run_advisor() then appends that content verbatim to the AI prompt (indirect prompt injection — CWE-1427), the returned JSON is stored in the mwai_advisor_data option with no schema validation or HTML sanitization, and advisor_metabox() concatenates the resulting 'title' and 'description' values directly into the WordPress dashboard widget without esc_html(), wp_kses(), or equivalent escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses the WordPress dashboard.

Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-96561"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-01T04:18:22Z",
    "severity": "HIGH"
  },
  "details": "The AI Engine \u2013 The Chatbot, AI Framework \u0026 MCP for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.8.0 This is due to a chain of missing input neutralization and output escaping across the /mwai-ui/v1/chats/submit REST endpoint, the PHP error-log parser (MeowKit_MWAI_Helpers::php_error_logs), the Advisor task (Meow_MWAI_Modules_Advisor::run_advisor), and the Advisor dashboard widget (advisor_metabox): the server-parameter denylist in chat_submit strips only exact key names such as \u0027model\u0027 while convert_keys() later canonicalizes \u0027model_\u0027 back to \u0027model\u0027, allowing an unauthenticated caller to place an attacker-controlled string (including CR/LF) into $query-\u003emodel; final_checks() throws an Exception whose message embeds that raw string, and the non-streaming, non-admin catch branch writes it to the PHP error log unmodified \u2014 creating a forged log line that the plugin\u0027s own parser subsequently returns as recent PHP-error content; run_advisor() then appends that content verbatim to the AI prompt (indirect prompt injection \u2014 CWE-1427), the returned JSON is stored in the mwai_advisor_data option with no schema validation or HTML sanitization, and advisor_metabox() concatenates the resulting \u0027title\u0027 and \u0027description\u0027 values directly into the WordPress dashboard widget without esc_html(), wp_kses(), or equivalent escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses the WordPress dashboard.",
  "id": "GHSA-h282-rvgq-85qj",
  "modified": "2026-10-01T06:31:23Z",
  "published": "2026-10-01T06:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96561"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/engines/core.php#L533"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/modules/advisor.php#L156"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/modules/advisor.php#L162"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/modules/advisor.php#L216"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/modules/chatbot.php#L122"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/modules/chatbot.php#L299"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/modules/chatbot.php#L597"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/query/base.php#L360"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/classes/rest.php#L464"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/ai-engine/tags/3.8.0/common/helpers.php#L251"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Fai-engine%2Ftags%2F3.8.0\u0026new_path=%2Fai-engine%2Ftags%2F3.8.1"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/910e51da-6ee2-45d5-837b-7fea80f79390?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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