---
id: CVE-2026-17520
title: >-
  The Newsletters WordPress plugin before 4.17 does not generate its API key
  using a sufficiently random source, deriving it from a publicly known value,
  allowing unauthenticated attackers to compute the key and perform privileged
  actions …
summary: >-
  The Newsletters WordPress plugin before 4.17 does not generate its API key
  using a sufficiently random source, deriving it from a publicly known value,
  allowing unauthenticated attackers to compute the key and perform privileged
  actions …
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L'
cwe:
  - CWE-326
published: '2026-08-29'
updated: '2026-08-30'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-17520'
references:
  - url: 'https://wpscan.com/vulnerability/5a719e6b-22e1-4950-bf17-cd92e2ea6685/'
    label: contact@wpscan.com
tags:
  - nvd
epss: 0.00121
epssPercentile: 0.01661
ingestedAt: '2026-08-30T07:49:06.836Z'
---

## Overview

The Newsletters WordPress plugin before 4.17 does not generate its API key using a sufficiently random source, deriving it from a publicly known value, allowing unauthenticated attackers to compute the key and perform privileged actions such as adding and deleting subscribers and sending emails, when the optional API has been enabled.

## Remediation

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