Unauthorized Enrollment in Mailing Lists for Mailgun Plugin by WordPress
CVE-2026-14834

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Mailgun For WordPress
Vendor
CVE Published:
31 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-14834?

The Mailgun for WordPress plugin prior to version 2.2.1 lacks necessary checks for capabilities and nonces on a specific unauthenticated AJAX action. This flaw allows attackers to add arbitrary email addresses to the website owner's mailing lists, leveraging stored API credentials. This vulnerability poses significant risks, enabling unauthorized access and manipulation of email subscription services.

Affected Version(s)

Mailgun for WordPress 0 < 2.2.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-14834 - Proof of Concept

References

https://wpscan.com/vulnerability/84135fff-e602-4773-8e79-...
exploitvdb-entrytechnical-description

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

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pedro Pinho
WPScan
.