AI Engine <= 3.6.5 - Cross-Site Request Forgery to Privilege Escalation via REQUEST_URI Substring Match

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-15988
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-01 08:16:29 UTC
Updated2026-08-12 21:00:37 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.002170000 probability, percentile 0.122550000 (date 2026-08-13)

Problem Types: CWE-352 | CWE-352 CWE-352 Cross-Site Request Forgery (CSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Tigroumeow AI Engine The Chatbot AI Framework MCP For WordPress affected 3.6.5 semver Not specified

References

ReferenceSourceLinkTags
www.wordfence.com/threat-intel/vulnerabilities/id/45816c45-42bc-4163-b700-a1e91... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3628188/ai-engine/trunk/labs/mcp-oauth.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/ai-engine/tags/3.6.2/labs/mcp-oauth.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: UKO (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-16T19:42:37.000ZVendor Notified
CNA2026-07-31T18:40:58.000ZDisclosed

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