Cozmoslabs User Profile Builder Plugin up to 4.0.3 on WordPress Gutenberg Register Block Assigned Role privileges management

Summaryinfo

A vulnerability identified as critical has been detected in Cozmoslabs User Profile Builder Plugin up to 4.0.3. Impacted is an unknown function of the component Gutenberg Register Block. Performing a manipulation of the argument Assigned Role results in privileges management. This vulnerability is reported as CVE-2026-115807. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Cozmoslabs User Profile Builder Plugin up to 4.0.3. It has been classified as critical. This affects some unknown functionality of the component Gutenberg Register Block. The manipulation of the argument Assigned Role with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Limited Privilege Escalation in all versions up to, and including, 4.0.3. This is due to the Gutenberg Register block passing the attacker-controlled Assigned Role attribute directly into the `[wppb-register]` shortcode without server-side authorization. The role guard in the form builder only downgrades roles that carry the manage_options or remove_users capability, leaving the Editor role and other privileged non-Administrator roles completely unrestricted. This makes it possible for authenticated attackers with Author-level access and above to create new WordPress accounts bearing the Editor role (or any other role that lacks the two guarded capabilities).

The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-115807 since 10/23/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/24/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

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

• Cozmoslabs

Name

• User Profile Builder Plugin

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3

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CPE 2.2info

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

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