Subscriber Management Vulnerability in Newsletters Plugin for WordPress
CVE-2026-16264

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Newsletters
Vendor
CVE Published:
23 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-16264?

The Newsletters plugin for WordPress, prior to version 4.18.1, has a significant security flaw that allows unauthorized access to subscriber management features. This vulnerability permits unauthenticated users to perform actions that include reading personal information of subscribers and modifying their records, including email addresses. Such exploits can lead to data breaches and unauthorized changes, compromising subscriber privacy and integrity.

Affected Version(s)

Newsletters 0 < 4.18.1

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-2026-16264 - Proof of Concept

References

https://wpscan.com/vulnerability/0dd1de2d-e9bb-4c42-a78b-...
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

Yaswanth Reddy Sunkara
WPScan
.