Unauthenticated Access Control Flaw in MainWP Child by MainWP
CVE-2026-27366

7.5HIGH

Key Information:

Vendor

WordPress
Status
MainWP Child
Vendor
CVE Published:
25 June 2026

What is CVE-2026-27366?

The MainWP Child plugin, up to version 6.1.1, contains a flaw that allows attackers to exploit unauthenticated access control vulnerabilities. This weakness enables unauthorized users to gain access to restricted areas of the application, potentially leading to sensitive data exposure or modification without proper authentication. It's essential for users of this plugin to promptly address this security issue to protect their WordPress sites.

Affected Version(s)

MainWP Child <= 6.1.1

References

https://patchstack.com/database/wordpress/plugin/mainwp-c...
vdb-entry

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

mcdruid | Patchstack Bug Bounty Program
.