wpmudev Broken Link Checker Plugin up to 2.4.14.1 on WordPress Shortcode do_shortcode code injection

Summaryinfo

A vulnerability labeled as critical has been found in wpmudev Broken Link Checker Plugin up to 2.4.14.1. This vulnerability affects the function do_shortcode of the component Shortcode Handler. The manipulation results in code injection. This vulnerability is identified as CVE-2026-96562. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in wpmudev Broken Link Checker Plugin up to 2.4.14.1. It has been classified as critical. Affected is the function do_shortcode of the component Shortcode Handler. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The The Broken Link Checker plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.4.14.1. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. Exploitation requires that a submitted comment containing the shortcode payload in an href or src attribute is approved through the site's normal comment moderation workflow; once approved, the shortcode is executed automatically via WP-Cron without any further attacker interaction.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-96562 since 09/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/16/2026). The MITRE ATT&CK project declares the attack technique as T1059.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• wpmudev

Name

• Broken Link Checker Plugin

Version

• 2.4.14.0
• 2.4.14.1

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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