{"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","slug":"CVE-2026-19801","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}