Privilege Escalation Vulnerability in Buyent Classified Plugin for WordPress
CVE-2025-13851

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Buyent
Vendor
CVE Published:
19 February 2026

What is CVE-2025-13851?

The Buyent Classified plugin for WordPress is susceptible to a privilege escalation issue due to inadequate validation of user roles during the registration process via the REST API. This vulnerability exists in all versions up to 1.0.7. Unauthenticated attackers can exploit this flaw by registering with arbitrary roles, including administrative privileges, by altering the _buyent_classified_user_type parameter. This allows malicious users to gain control over the WordPress site, posing a significant security threat.

Affected Version(s)

Buyent 0 <= 1.0.7

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://themeforest.net/item/buyent-classified-wordpress-...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ismail Syaleh
.