CVE-2025-25171: WP SmartPay Auth Bypass Vulnerability

CVE-2025-25171 Overview

CVE-2025-25171 is an authentication bypass vulnerability in the Convers Lab WP SmartPay plugin for WordPress. The flaw allows attackers to abuse an alternate authentication path to take over user accounts, including privileged accounts. The vulnerability affects WP SmartPay versions up to and including 2.7.13. The issue is categorized under CWE-288, Authentication Bypass Using an Alternate Path or Channel.

Network-based exploitation is possible with low attacker privileges and no user interaction. Successful exploitation results in full compromise of confidentiality, integrity, and availability of the affected WordPress installation.

Critical Impact
Attackers with low-privilege access can bypass authentication controls and take over arbitrary accounts on WordPress sites running vulnerable WP SmartPay versions.

Affected Products

Convers Lab WP SmartPay plugin for WordPress
WP SmartPay versions through 2.7.13
WordPress sites with the WP SmartPay plugin enabled

Discovery Timeline

2025-06-27 - CVE-2025-25171 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-25171

Vulnerability Analysis

The vulnerability stems from an alternate authentication path exposed by the WP SmartPay plugin. The plugin handles account-related operations through a code path that does not enforce the same authentication checks as the primary login flow. Attackers can invoke this alternate channel to authenticate as another user without supplying the target user's credentials.

The weakness maps to CWE-288, in which an authentication mechanism can be circumvented by reaching protected functionality through a route that does not validate identity correctly. In the context of WordPress, the plugin appears to expose handlers that accept user identifiers or session attributes that should not be trusted from client input. Account takeover of an administrator account leads to full site compromise, including arbitrary plugin and theme installation and database access.

Root Cause

The root cause is improper validation of authentication state in a secondary code path exposed by the plugin. Sensitive account operations rely on parameters supplied by the requester rather than on the WordPress session and capability checks performed by current_user_can() and nonce validation. This permits an authenticated low-privilege user to elevate to another account.

Attack Vector

The attack vector is network-based and requires only low-privilege authenticated access, such as a subscriber-level account that can be self-registered on many WordPress sites. The attacker issues a crafted HTTP request to the vulnerable plugin endpoint, supplying the identifier of the target account. The endpoint then performs the requested action under the target identity, enabling takeover. No user interaction is required from the victim. Refer to the Patchstack Vulnerability Report for technical details.

Detection Methods for CVE-2025-25171

Indicators of Compromise

Unexpected role changes or password resets on WordPress user accounts, particularly administrators.
Successful authentication events for accounts that did not perform an interactive login.
New administrator accounts, plugins, or themes created shortly after requests to WP SmartPay endpoints.
HTTP requests to WP SmartPay plugin handlers containing user ID or email parameters from low-privilege sessions.

Detection Strategies

Review WordPress audit logs for account takeover indicators such as session creation without a preceding wp-login.php POST.
Inspect web server access logs for requests to /wp-admin/admin-ajax.php and WP SmartPay REST routes originating from subscriber accounts.
Correlate plugin endpoint activity with subsequent privilege changes recorded in the wp_usermeta table.

Monitoring Recommendations

Enable a WordPress activity logging plugin to capture user, role, and capability changes in real time.
Forward web server and WordPress logs to a centralized SIEM for correlation across authentication and plugin events.
Alert on the creation of administrator accounts and on changes to the wp_optionsactive_plugins value.

How to Mitigate CVE-2025-25171

Immediate Actions Required

Update WP SmartPay to a version later than 2.7.13 once a fixed release is available from Convers Lab.
Disable or remove the WP SmartPay plugin until a patched version is deployed if updating is not immediately possible.
Audit all WordPress user accounts for unauthorized role changes, new administrators, and unexpected email address updates.
Force a password reset and session invalidation for all privileged accounts on affected sites.

Patch Information

Consult the Patchstack Vulnerability Report for vendor patch status and fixed version information. Apply the vendor update through the WordPress plugin manager once published.

Workarounds

Restrict new user registration by setting Settings → General → Membership to disabled to reduce the pool of low-privilege accounts.
Place a Web Application Firewall (WAF) rule in front of WordPress to block requests to WP SmartPay endpoints that contain user identifier parameters from non-administrator sessions.
Limit access to /wp-admin/admin-ajax.php and REST API namespaces used by WP SmartPay through IP allowlisting where feasible.

bash

# Disable the WP SmartPay plugin from the command line using WP-CLI
wp plugin deactivate smartpay
wp plugin delete smartpay

# Audit administrator accounts
wp user list --role=administrator --fields=ID,user_login,user_email,user_registered