Wpeverest User Registration & Membership Plugin up to 5.2.8 on WordPress Shortcode do_shortcode code injection

Summaryinfo

A vulnerability described as critical has been identified in Wpeverest User Registration & Membership Plugin up to 5.2.8. This impacts the function do_shortcode of the component Shortcode. The manipulation results in code injection. This vulnerability was named CVE-2026-15222. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Wpeverest User Registration & Membership Plugin up to 5.2.8. It has been classified as critical. Affected is the function do_shortcode of the component Shortcode. 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 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 5.2.8. 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 authenticated attackers, with subscriber-level access and above, to execute arbitrary shortcodes.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-15222 since 07/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. 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

• Wpeverest

Name

• User Registration & Membership Plugin

Version

• 5.2.0
• 5.2.1
• 5.2.2
• 5.2.3
• 5.2.4
• 5.2.5
• 5.2.6
• 5.2.7
• 5.2.8

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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