Unauthenticated Broken Access Control in Newsletters Plugin by WordPress
CVE-2026-54840

7.3HIGH

Key Information:

Vendor

WordPress
Status
Newsletters
Vendor
CVE Published:
26 June 2026

What is CVE-2026-54840?

Recent findings reveal an unauthenticated broken access control vulnerability in the Newsletters plugin for WordPress, specifically affecting versions up to 4.13. This vulnerability allows attackers to access restricted functionalities without proper authentication checks. Users and administrators of the plugin are encouraged to update to the latest version to mitigate potential security risks.

Affected Version(s)

Newsletters <= 4.13

References

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

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

HieuPenguinnn | Patchstack Bug Bounty Program
.