wpdevteam BetterLinks Plugin up to 3.1.0 on WordPress authorization

Summaryinfo

A vulnerability was found in wpdevteam BetterLinks Plugin up to 3.1.0. It has been classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation leads to authorization. This vulnerability is traded as CVE-2026-19801. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in wpdevteam BetterLinks Plugin up to 3.1.0 and classified as problematic. This issue affects an unknown code block. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is integrity. The summary by CVE is:

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.

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-19801 since 08/13/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/25/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• wpdevteam

Name

• BetterLinks Plugin

Version

• 3.0
• 3.1.0

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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