Data Disclosure Vulnerability in Simple Newsletter Plugin for WordPress
CVE-2026-78146

Currently unrated

Key Information:

Vendor

WordPress
Status
Simple Newsletter Plugin
Vendor
CVE Published:
26 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-78146?

The Simple Newsletter Plugin for WordPress, prior to version 4.3.3, has a security flaw that allows unauthenticated users to access and disclose personal data of subscribers. This occurs due to the plugin's failure to validate that a requester is indeed the authorized subscriber before presenting their private information. Consequently, sensitive subscriber data becomes available, including the authorization key needed to modify their records.

Affected Version(s)

Simple Newsletter Plugin 4.0.0 < 4.3.3

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-2026-78146 - Proof of Concept

References

https://wpscan.com/vulnerability/dd6e7f9c-b986-4bb7-afb4-...
exploitvdb-entrytechnical-description

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Shivamani Vastrala
WPScan
.