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CVE-2026-19801

MEDIUM 4.3 CVSS 3.1
Published
August 25, 2026
Last modified
October 12, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-862
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Description

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.

Affected WordPress components

  • BetterLinks – Link Shortener, Link Cloaking, Redirects, Affiliate Link Manager & MCP Plugin · betterlinks
    Confirmed match Active
    Up to and including 3.1.0
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • wpdevteam BetterLinks – Link Shortener, Link Cloaking, Redirects, Affiliate Link Manager & MCP — Up to and including 3.1.0

References