CVE-2026-27407Network attack vector

Editor-to-Administrator escalation via missing MCP authorization

Published Jun 15, 2026 · Updated Jun 15, 2026

Privilege escalation in Meow Apps AI Engine 3.4.9 and earlier allows remote authenticated users with Editor access to gain administrator privileges. MCP OAuth authorization and bearer-token validation accept non-administrator accounts instead of enforcing the administrator capability. Editor access and a reachable MCP OAuth endpoint are required; exploitation exposes administrator-only MCP operations on the WordPress site.

CVSS severity7.2
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Meow Apps AI Engine 3.4.9 and earlier allows remote authenticated users with Editor access to gain administrator privileges. MCP OAuth authorization and bearer-token validation accept non-administrator accounts instead of enforcing the administrator capability. Editor access and a reachable MCP OAuth endpoint are required; exploitation exposes administrator-only MCP operations on the WordPress site.

The record

CVE
CVE-2026-27407
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
Jordy Meow
Product
AI Engine
Classifications
CWE-266, CAPEC-233, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=3.4.9 changes=[{"at":"3.5.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jordy Meow · AI Engineversion=n/a <=3.4.9 changes=[{"at":"3.5.0","status":"unaffected"}]

Published CVSS scores

7.2PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CAPEC-233Privilege Escalation
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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