Unauthenticated Privilege Escalation in Meta Box AIO by WordPress
CVE-2026-39761

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Meta Box Aio
Vendor
CVE Published:
6 October 2026

What is CVE-2026-39761?

The vulnerability in Meta Box AIO allows attackers to escalate privileges without authentication in versions up to 3.7.1. This could enable unauthorized users to gain elevated access to sensitive functionalities, posing a significant risk to WordPress sites using this plugin.

Affected Version(s)

Meta Box AIO <= 3.7.1

References

https://patchstack.com/database/wordpress/plugin/meta-box...
vdb-entry

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

wackydawg | Patchstack Bug Bounty Program
.