Description
The AI Copilot WordPress plugin before 1.5.4 does not bind OAuth access tokens to a WordPress user, and accepts any valid token as an administrator session, allowing unauthenticated attackers who complete the public OAuth flow to execute privileged MCP tools as an administrator, including arbitrary user creation and role escalation.
Published: 2026-07-17
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The AI Copilot plugin fails to bind OAuth access tokens to a WordPress user and accepts any valid token as an administrator session. This improper authorization weakness (CWE-269) allows attackers who complete the public OAuth flow to execute privileged MCP tools with administrator privileges, enabling arbitrary user creation and role escalation.

Affected Systems

Installations of the AI Copilot WordPress plugin older than version 1.5.4 are affected. The plugin is distributed through WordPress and can be configured to allow OAuth authentication, making any unauthenticated visitor capable of exploiting the flaw.

Risk and Exploitability

Based on the description, it is inferred that the attackers only need to perform the normal OAuth authorization step; once a token is issued, the plugin grants full administrative rights without further validation. The CVSS score of 9.8 indicates critical severity, while the EPSS score of < 1 % suggests a low probability of immediate exploitation. The vulnerability is not listed in the CISA KEV catalog.

Generated by OpenCVE AI on July 31, 2026 at 00:34 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the vendor’s security update by installing AI Copilot 1.5.4 or later, which correctly associates OAuth tokens with the originating WordPress user.
  • Disable or remove the plugin’s OAuth integration temporarily until the update can be applied, ensuring that no valid tokens can be issued.
  • After deployment, audit the user database for unexpected administrator accounts or abnormal role assignments and delete or re‑assign any that appear to have been created by an attacker.

Generated by OpenCVE AI on July 31, 2026 at 00:34 UTC.

Tracking

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Advisories

No advisories yet.

History

Fri, 17 Jul 2026 13:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-269
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 17 Jul 2026 06:45:00 +0000

Type Values Removed Values Added
Description The AI Copilot WordPress plugin before 1.5.4 does not bind OAuth access tokens to a WordPress user, and accepts any valid token as an administrator session, allowing unauthenticated attackers who complete the public OAuth flow to execute privileged MCP tools as an administrator, including arbitrary user creation and role escalation.
Title AI Chatbot & Workflow Automation by AIWU < 1.5.4 - Unauthenticated Privilege Escalation via MCP OAuth
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-07-17T12:55:39.724Z

Reserved: 2026-05-28T08:04:00.536Z

Link: CVE-2026-9810

cve-icon Vulnrichment

Updated: 2026-07-17T12:55:04.456Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T00:45:05Z

Weaknesses
  • CWE-269

    Improper Privilege Management