Privilege escalation in Cmssuperheroes Flex Store Users
CVE-2025-13619
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.
Vulnerability class: Privilege Escalation
EPSS: 0.003 (24.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cmssuperheroes Flex Store Users — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-13619?
- CVE-2025-13619 is a critical-severity vulnerability in Cmssuperheroes Flex Store Users, classified under Improper Privilege Management. CVSS score: 9.8/10. Published 2025-12-20.
- How severe is CVE-2025-13619?
- Critical severity. CVSS v3 base score is 9.8 out of 10.