Flex Store Users Plugin up to 1.1.0 on WordPress add_role_seller fs_type privileges management

Summaryinfo

A vulnerability categorized as critical has been discovered in Flex Store Users Plugin up to 1.1.0 on WordPress. The impacted element is the function fsUserHandle::signup/fsSellerRole::add_role_seller. The manipulation of the argument fs_type results in Remote Code Execution. This vulnerability is cataloged as CVE-2025-13619. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Flex Store Users Plugin up to 1.1.0 on WordPress. Affected is the function fsUserHandle::signup/fsSellerRole::add_role_seller. The manipulation of the argument fs_type with an unknown input leads to a remote code execution 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. CVE summarizes:

The Flex Store Users plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.1.0. This is due to the 'fsUserHandle::signup' and the 'fsSellerRole::add_role_seller' functions not restricting what user roles a user can register with. This makes it possible for unauthenticated attackers to supply the 'administrator' role during registration and gain administrator access to the site. Note: The vulnerability can be exploited with the 'fs_type' parameter if the Flex Store Seller plugin is also activated.

The advisory is available at wordfence.com. This vulnerability is traded as CVE-2025-13619. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 12/21/2025). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-204635). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Name

• Flex Store Users Plugin

Version

• 1.0
• 1.1.0

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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