---
id: CVE-2026-86823
title: >-
  The Newsletter  WordPress plugin before 9.3.7 does not validate the
  destination of the redirect performed after a public subscription action,
  allowing unauthenticated attackers to redirect users to arbitrary external
  sites and to disclos…
summary: >-
  The Newsletter  WordPress plugin before 9.3.7 does not validate the
  destination of the redirect performed after a public subscription action,
  allowing unauthenticated attackers to redirect users to arbitrary external
  sites and to disclos…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-601
product: Newsletter
affected:
  - Newsletter < 9.3.7
published: '2026-09-16'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T13:16:54.037'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86823'
references:
  - url: 'https://wpscan.com/vulnerability/2db98679-24ca-494e-a8fd-f6417a0f1ea8/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-17T12:17:25.728639Z'
epss: 0.00323
epssPercentile: 0.22676
ingestedAt: '2026-09-16T06:51:06.254Z'
---

## Overview

The Newsletter  WordPress plugin before 9.3.7 does not validate the destination of the redirect performed after a public subscription action, allowing unauthenticated attackers to redirect users to arbitrary external sites and to disclose a subscriber token that grants access to that subscriber record's front-end actions.

## Remediation

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