CSRF in Tigroumeow Ai Engine – The Chatbot, Framework & Mcp For WordPress
CVE-2026-15988
The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.6.5 This is due to missing or incorrect nonce validation on the reauth_for_authorize function. This makes it possible for unauthenticated attackers to create new administrator accounts with attacker-supplied credentials via a CSRF-based REST authentication bypass, granted they can trick a site administrator into performing an action such as clicking on a link. This bypass can be combined with WordPress's ?_method=POST method-override support to convert a top-navigation GET request into an authenticated POST to the REST users endpoint, requiring no existing account on the attacker's part.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/45816c45-42bc-4163-b700-a1e91…
- plugins.trac.wordpress.org/browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php
- plugins.trac.wordpress.org/browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php
- plugins.trac.wordpress.org/browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php
- plugins.trac.wordpress.org/browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php
- plugins.trac.wordpress.org/changeset
- plugins.trac.wordpress.org/changeset/3628188/ai-engine/trunk/labs/mcp-oauth.php
Frequently asked questions
- What is CVE-2026-15988?
- CVE-2026-15988 is a high-severity vulnerability in Tigroumeow Ai Engine – The Chatbot, Framework & Mcp For WordPress, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2026-08-01.
- How severe is CVE-2026-15988?
- High severity. CVSS v3 base score is 8.8 out of 10.