Privilege escalation in Scriptsbundle Buyent
CVE-2025-13851
The Buyent Classified plugin for WordPress (bundled with Buyent theme) is vulnerable to privilege escalation via user registration in all versions up to, and including, 1.0.7. This is due to the plugin not validating or restricting the user role during registration via the REST API endpoint. This makes it possible for unauthenticated attackers to register accounts with arbitrary roles, including administrator, by manipulating the _buyent_classified_user_type parameter during the registration process, granting them complete control over the WordPress site.
Vulnerability class: Privilege Escalation
EPSS: 0.003 (23.4th 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
- Scriptsbundle Buyent — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-13851?
- CVE-2025-13851 is a critical-severity vulnerability in Scriptsbundle Buyent, classified under Improper Privilege Management. CVSS score: 9.8/10. Published 2026-02-19.
- How severe is CVE-2025-13851?
- Critical severity. CVSS v3 base score is 9.8 out of 10.