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CVE-2026-15015— MountDev AI MCP Connector for WordPress <= 1.6.1 - Unauthenticated Privilege Escalation via OAuth Authorization Endpoint

Quick assessment

Affected
cascadiawebservices MountDev AI MCP Connector for WordPress
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress MountDev AI MCP Connector for WordPress是WordPress基金会的一款WordPress的AI模型上下文协议连接器组件。 MountDev AI MCP Connector for WordPress 1.6.1及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户授权，可能导致未经身份验证的攻击者通过自注册客户端获取管理员绑定的OAuth Bearer令牌，从而获得插件MCP工具表面以及所有暴露的WordPress内容、用户和选项的完全管理员

CVSS 9.8 · Critical EPSS 0.71% · P51

Affected Version Matrix 1

VendorProduct Version RangeStatus
cascadiawebservices MountDev AI MCP Connector for WordPress ≤ 1.6.1 affected
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I. Basic Information for CVE-2026-15015

Vulnerability Information
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Vulnerability Title
MountDev AI MCP Connector for WordPress <= 1.6.1 - Unauthenticated Privilege Escalation via OAuth Authorization Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The MountDev AI MCP Connector for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.6.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to obtain an administrator-bound OAuth Bearer token via a self-registered client, granting full administrator-equivalent access to the plugin's MCP tool surface and all exposed WordPress content, users, and options. This is exploitable by combining the publicly accessible Dynamic Client Registration endpoint, which allows unauthenticated callers to register arbitrary OAuth clients with an attacker-controlled redirect_uri, with the unprotected authorization endpoint to complete the full OAuth flow without any administrator interaction.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress MountDev AI MCP Connector for WordPress 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress MountDev AI MCP Connector for WordPress是WordPress基金会的一款WordPress的AI模型上下文协议连接器组件。 MountDev AI MCP Connector for WordPress 1.6.1及之前版本存在授权问题漏洞，该漏洞源于插件未正确验证用户授权，可能导致未经身份验证的攻击者通过自注册客户端获取管理员绑定的OAuth Bearer令牌，从而获得插件MCP工具表面以及所有暴露的WordPress内容、用户和选项的完全管理员
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cascadiawebservices MountDev AI MCP Connector for WordPress 0 ~ 1.6.1 -

II. Public POCs for CVE-2026-15015

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III. Intelligence Information for CVE-2026-15015

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Vendor Advisories for CVE-2026-15015 (1)

IV. Related Vulnerabilities

Same weakness: CWE-862

V. Comments for CVE-2026-15015

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