CVE-2026-15988 json
AI Engine <= 3.6.5 - Cross-Site Request Forgery to Privilege Escalation via REQUEST_URI Substring Match
published 2026-08-01 3 mo ago modified 2026-08-12 2 mo ago also EUVD-2026-51739
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
- tigroumeow AI Engine – The Chatbot, AI Framework & MCP for WordPress
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/45816c45-42bc-4163-b700-a1e913f32c97?source=cve
- plugins.trac.wordpress.org /browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php#L127
- plugins.trac.wordpress.org /browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php#L120
- plugins.trac.wordpress.org /browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php#L121
- plugins.trac.wordpress.org /browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php#L49
- plugins.trac.wordpress.org /changeset?old_path=%2Fai-engine/tags/3.6.5&new_path=%2Fai-engine/tags/3.6.6
- plugins.trac.wordpress.org /changeset/3628188/ai-engine/trunk/labs/mcp-oauth.php
Sources
- CVE List CVE-2026-15988
- NVD CVE-2026-15988
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.