Arbitrary Shortcode Execution Vulnerability in Email Subscribers & Newsletters Plugin for WordPress
CVE-2026-12757

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin For WordPress
Vendor
CVE Published:
7 September 2026

What is CVE-2026-12757?

The Email Subscribers & Newsletters plugin for WordPress introduces a security flaw that permits arbitrary shortcode execution due to insufficient input validation. This vulnerability affects all versions up to and including 5.9.27. Unauthenticated attackers can exploit this issue to execute malicious shortcodes, potentially compromising site integrity and user data.

Affected Version(s)

Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress 0 <= 5.9.27

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/email-subscrib...
https://plugins.trac.wordpress.org/browser/email-subscrib...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
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

Sander Horsman
.