Vulnerability · Published Dec 20, 2025 · Assigned by Wordfence
CVE-2025-13619Flex Store Users <= 1.1.0 - Unauthenticated Privilege Escalation
Critical 9.8
In plain English
A critical-severity privilege mismanagement in Flex Store Users from CMSSuperHeroes. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| CMSSuperHeroes | Flex Store Users | 0 – through 1.1.0 |
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H