Authorization Flaw in Nelio AB Testing by Nelio Software
CVE-2026-40742

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Nelio Ab Testing
Vendor
CVE Published:
15 April 2026

What is CVE-2026-40742?

A Missing Authorization vulnerability has been identified in Nelio AB Testing by Nelio Software, which can lead to incorrectly configured access control security levels. This vulnerability allows unauthorized users to gain access to restricted functionalities within the plugin, potentially exposing sensitive data and compromising user security. Users are advised to update their plugins to the latest version to mitigate this risk.

Affected Version(s)

Nelio AB Testing 0 <= 8.2.8

References

https://patchstack.com/database/Wordpress/Plugin/nelio-ab...
vdb-entry

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bao - BlueRock | Patchstack Bug Bounty Program
.