How serious is CVE-2025-13851?

This vulnerability has a CVSS score of 9.8 out of 10, classified as CRITICAL severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2025-13851?

Yes, proof-of-concept exploit code for CVE-2025-13851 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2025-13851?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2025-13851?

To remediate CVE-2025-13851, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2025-13851

Critical

|9.8

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

An attacker can gain full control of a WordPress site by registering as an administrator without any prior authentication, simply by manipulating a specific parameter during the user registration process. This vulnerability affects all versions of the Buyent Classified plugin up to 1.0.7, allowing anyone to exploit it without needing a valid account.

Technical Description

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.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeUnchanged

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$13,000($5K-$15K)

Vendor Response

Grade APatched in 0 days

Quick Information

Published

Feb 19, 2026

about 2 months ago

Last Modified

Feb 19, 2026

about 2 months ago