---
id: CVE-2026-19801
title: >-
  The BetterLinks – Link Shortener, Link Cloaking, Redirects, Affiliate Link
  Manager & MCP plugin for WordPress is vulnerable to authorization bypass in
  all versions up to, and including, 3.1.0
summary: >-
  The BetterLinks – Link Shortener, Link Cloaking, Redirects, Affiliate Link
  Manager & MCP plugin for WordPress is vulnerable to authorization bypass in
  all versions up to, and including, 3.1.0. This is due to the plugin not
  properly verif…
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: '2026-10-12'
sourceUpdated: '2026-10-12T15:10:00.207'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19801'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.0.0/betterlinks.php#L254
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.0.0/includes/Admin/Ajax.php#L180
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.0.0/includes/Admin/Ajax.php#L99
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.1.0/betterlinks.php#L254
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.1.0/includes/Admin/Ajax.php#L180
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.1.0/includes/Admin/Ajax.php#L99
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3658390%40betterlinks&new=3658390%40betterlinks
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/faf44730-b975-4057-96dc-7284775500f9?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00287
epssPercentile: 0.19567
ingestedAt: '2026-10-12T15:55:08.144Z'
---

## Overview

The BetterLinks – Link Shortener, Link Cloaking, Redirects, Affiliate Link Manager & MCP plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.0. 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 subscriber-level access and above, to create arbitrary BetterLinks short URLs with attacker-controlled slugs and redirect destinations, enabling phishing and SEO abuse. Exploitation requires the Fluent Boards companion plugin to be installed and active (so that the FLUENT_BOARDS constant is defined), and is further facilitated by the betterlinks_admin_nonce nonce being emitted on every frontend page via wp_localize_script, making it accessible to any authenticated user.

## Remediation

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