---
id: CVE-2026-75908
title: >-
  The Newsletters plugin for WordPress is vulnerable to authorization bypass in
  all versions up to, and including, 4.17
summary: >-
  The Newsletters plugin for WordPress is vulnerable to authorization bypass in
  all versions up to, and including, 4.17. This is due to the plugin not
  properly verifying that a user is authorized to perform an action. This makes
  it possibl…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
published: '2026-08-25'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T23:10:00.143'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75908'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.17/includes/checkinit.php#L63
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.17/wp-mailinglist.php#L3897
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.17/wp-mailinglist.php#L3957
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.17/wp-mailinglist.php#L4114
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3663788%40newsletters-lite&new=3663788%40newsletters-lite
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/1d3eddce-1b41-4a33-8d57-bd594cf06a06?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-09-28T23:23:00.553Z'
---

## Overview

The Newsletters plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.17. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to send arbitrary newsletter emails to users of any WordPress role, including administrators, by forging POST fields during a normal post submission. This allows an attacker-supplied role slug via the newsletters_mailinglistsroles POST field to be passed directly to get_users(), enabling unauthorized mass-mailing and potential phishing against privileged site users through the site's own outbound email channel.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.