Newsletters <= 4.13 - Unauthenticated SQL Injection via wpmlsubscriber_id Parameter
CVE-2026-3018

7.5HIGH

Key Information:

Vendor

WordPress
Status
Newsletters
Vendor
CVE Published:
10 June 2026

What is CVE-2026-3018?

The Newsletters plugin for WordPress is vulnerable to time-based SQL Injection via the ‘wpmlsubscriber_id’ parameter in all versions up to, and including, 4.13 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Affected Version(s)

Newsletters 0 <= 4.13

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/newsletters-li...
https://plugins.trac.wordpress.org/changeset/3566485/news...

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

wesley
.