CVE-2025-66083: WpEvently Authorization Bypass Vulnerability

CVE-2025-66083 Overview

CVE-2025-66083 is a Missing Authorization vulnerability [CWE-862] affecting the magepeopleteam WpEvently (mage-eventpress) WordPress plugin. The flaw exists in all versions up to and including 5.0.4. Attackers can exploit incorrectly configured access control security levels to reach functionality that should be restricted. The issue is exploitable over the network without authentication or user interaction, and impacts data integrity while leaving confidentiality and availability intact.

Critical Impact
Unauthenticated network attackers can invoke plugin functionality protected by broken access controls, allowing unauthorized modification of WpEvently-managed data on affected WordPress sites.

Affected Products

magepeopleteam WpEvently (mage-eventpress) plugin — versions up to and including 5.0.4
WordPress sites running the vulnerable plugin
Environments allowing anonymous HTTP requests to the plugin's endpoints

Discovery Timeline

2025-11-21 - CVE-2025-66083 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-66083

Vulnerability Analysis

The vulnerability stems from missing authorization checks within the WpEvently plugin. Plugin endpoints fail to verify whether the requesting user holds the required capability or role before executing privileged actions. This design flaw falls under the Broken Access Control category and is classified as [CWE-862] Missing Authorization.

The attack requires no authentication and no user interaction, and is exploitable remotely over HTTP. The impact is scoped to integrity, meaning attackers can alter data managed by the plugin but cannot directly read protected information or crash the site through this flaw alone. According to EPSS data as of 2026-07-14, the probability of exploitation activity is low, though public plugin exposure keeps the attack surface broad.

Root Cause

The root cause is the absence of capability checks (for example, missing current_user_can() verification) and nonce validation within one or more AJAX or REST handlers exposed by the plugin. Access control decisions rely on assumptions about how endpoints are called rather than enforcing server-side authorization on each request.

Attack Vector

An unauthenticated attacker sends crafted HTTP requests directly to the vulnerable plugin endpoints on a target WordPress site. Because authorization is not enforced, the server processes the request as if it originated from a privileged context, permitting state-changing operations against WpEvently data. See the Patchstack WordPress Plugin Vulnerability advisory for additional context.

No verified proof-of-concept code has been published. The vulnerability is described in prose only, and no exploitation code should be inferred.

Detection Methods for CVE-2025-66083

Indicators of Compromise

Unauthenticated POST or GET requests to WpEvently plugin endpoints under /wp-admin/admin-ajax.php or plugin-specific REST routes.
Unexpected modifications to event records, bookings, or plugin settings without a corresponding administrator session in logs.
HTTP requests to plugin URLs originating from IP addresses with no prior authenticated session activity.

Detection Strategies

Review WordPress and web server access logs for anonymous requests targeting mage-eventpress action names or REST endpoints.
Correlate plugin-driven database changes with authenticated user sessions; flag changes lacking a matching authenticated request.
Deploy WordPress-aware web application firewall (WAF) rules that alert on unauthenticated invocation of privileged plugin actions.

Monitoring Recommendations

Enable verbose logging on the WpEvently plugin and forward logs to a centralized SIEM for correlation.
Monitor for spikes in traffic to plugin endpoints and alert on outlier source IPs or user agents.
Track integrity of event and configuration tables in the WordPress database using scheduled hash comparisons.

How to Mitigate CVE-2025-66083

Immediate Actions Required

Identify all WordPress installations running the WpEvently (mage-eventpress) plugin at version 5.0.4 or earlier.
Update to a patched release from the vendor as soon as one becomes available; consult the Patchstack advisory for the fixed version.
If a patched version is not yet deployable, disable or remove the plugin until remediation is possible.

Patch Information

The vendor's fixed release should be applied through the WordPress plugin update mechanism. Refer to the Patchstack WordPress Plugin Vulnerability entry for the specific fixed version and vendor guidance.

Workarounds

Restrict access to WpEvently endpoints using web server or WAF rules that require authentication headers or valid session cookies.
Limit administrative and AJAX endpoints to trusted IP ranges where operationally feasible.
Enforce strong nonce and capability checks at the reverse proxy layer for requests targeting admin-ajax.php actions associated with the plugin.

bash

# Example: block unauthenticated requests to WpEvently admin-ajax actions at nginx
location = /wp-admin/admin-ajax.php {
    if ($arg_action ~* "^(mep_|wpevently_)") {
        if ($http_cookie !~* "wordpress_logged_in_") {
            return 403;
        }
    }
}