CVE-2025-49270: WP-CRM System Auth Bypass Vulnerability

CVE-2025-49270 Overview

CVE-2025-49270 is a Missing Authorization vulnerability [CWE-862] in the WP-CRM System plugin by Mario Peshev for WordPress. The flaw affects all plugin versions from n/a through 3.4.2. Attackers can access functionality that is not properly constrained by access control lists (ACLs), enabling unauthorized interactions with plugin features over the network without authentication or user interaction. The issue produces limited integrity impact on affected WordPress installations running the vulnerable plugin.

Critical Impact
Unauthenticated attackers can reach WP-CRM System functionality that should require authorization, allowing modification of plugin-controlled data on affected WordPress sites.

Affected Products

Mario Peshev WP-CRM System plugin for WordPress
Versions from n/a through 3.4.2
WordPress installations running the vulnerable plugin

Discovery Timeline

2025-06-06 - CVE-2025-49270 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-49270

Vulnerability Analysis

The WP-CRM System plugin exposes functionality without enforcing proper authorization checks. The plugin fails to verify whether the requesting user holds the required capabilities before executing sensitive actions. This class of flaw falls under Broken Access Control and is tracked as [CWE-862] Missing Authorization.

An attacker can reach plugin endpoints over the network without prior authentication. Because the vulnerability sits within a customer relationship management (CRM) plugin, the exposed functions likely handle records such as contacts, tasks, or projects. Successful exploitation results in limited integrity impact, meaning attackers can alter certain plugin-managed data without gaining full administrative control.

The EPSS probability for this CVE is low, and no public proof-of-concept exploit has been published at the time of writing. The Patchstack advisory documents the flaw and tracks vendor remediation status.

Root Cause

The root cause is the absence of capability checks such as current_user_can() and missing nonce verification on plugin action handlers. WordPress plugins must gate sensitive operations behind role-based capability checks. WP-CRM System through version 3.4.2 executes certain actions without validating the caller's role, allowing unauthenticated requests to succeed.

Attack Vector

The attack vector is network-based and requires no authentication or user interaction. An attacker sends crafted HTTP requests directly to the vulnerable plugin endpoints exposed by the WordPress site. The request invokes plugin functionality that should be restricted to authorized roles. No exploitation code is publicly available, so this section describes the mechanism in prose rather than reproducing an untested payload. See the Patchstack Vulnerability Report for technical details.

Detection Methods for CVE-2025-49270

Indicators of Compromise

Unauthenticated HTTP POST or GET requests targeting WP-CRM System action handlers, particularly admin-ajax.php calls referencing wp-crm actions.
Unexpected modification, creation, or deletion of CRM records (contacts, tasks, projects) without a corresponding authenticated administrator session.
WordPress audit log entries showing plugin actions executed with anonymous or unexpected user context.

Detection Strategies

Review web server access logs for requests to plugin endpoints that lack authentication cookies or valid _wpnonce parameters.
Correlate CRM record changes with authenticated admin session activity to identify anomalies.
Deploy Web Application Firewall (WAF) rules that flag unauthenticated requests to WP-CRM System AJAX actions.

Monitoring Recommendations

Enable WordPress activity logging plugins to capture plugin action invocations along with the initiating user role.
Monitor database tables used by WP-CRM System for anomalous write patterns originating outside admin workflows.
Alert on repeated 200 OK responses to unauthenticated requests targeting /wp-admin/admin-ajax.php with WP-CRM action parameters.

How to Mitigate CVE-2025-49270

Immediate Actions Required

Update WP-CRM System to a version later than 3.4.2 once the vendor publishes a fix, and verify the fix through the Patchstack advisory.
Audit CRM records for unauthorized changes made prior to remediation.
Restrict access to /wp-admin/admin-ajax.php at the WAF or reverse proxy layer for unauthenticated visitors where feasible.

Patch Information

At the time of publication, the advisory covers WP-CRM System versions through 3.4.2. Administrators should consult the Patchstack Vulnerability Report for the latest fixed version and upgrade guidance. Apply the patched release through the WordPress plugin updater once available.

Workarounds

Deactivate the WP-CRM System plugin until a patched version is installed if the plugin is not business-critical.
Deploy virtual patching through a WAF to block unauthenticated requests to WP-CRM System action handlers.
Restrict plugin functionality to trusted IP ranges through server-level access controls on wp-admin paths.

bash

# Example nginx rule to block unauthenticated access to WP-CRM AJAX actions
location = /wp-admin/admin-ajax.php {
    if ($arg_action ~* "^wp-crm") {
        # Require a valid WordPress logged-in cookie
        if ($http_cookie !~* "wordpress_logged_in_") {
            return 403;
        }
    }
}