CVE-2026-57781: MeetingHub Auth Bypass Vulnerability

CVE-2026-57781 Overview

CVE-2026-57781 is a missing authorization vulnerability in the Sovlix MeetingHub plugin for WordPress. The flaw stems from incorrectly configured access control security levels within the plugin. Unauthenticated attackers can reach protected functionality over the network without valid credentials or user interaction. The issue affects all MeetingHub versions from initial release through 1.25.10. The weakness is categorized under [CWE-862] Missing Authorization. Successful exploitation grants limited integrity impact against affected WordPress installations. The vulnerability requires no privileges and low attack complexity, making it accessible to remote actors scanning for vulnerable plugin installations.

Critical Impact
Unauthenticated network-based attackers can invoke plugin functionality that lacks proper capability checks, modifying data within the WordPress installation running MeetingHub <= 1.25.10.

Affected Products

Sovlix MeetingHub WordPress Plugin versions up to and including 1.25.10
WordPress sites with the meetinghub plugin installed and active
Any hosting environment exposing the plugin's endpoints to the public internet

Discovery Timeline

2026-07-13 - CVE-2026-57781 published to NVD
2026-07-13 - Last updated in NVD database

Technical Details for CVE-2026-57781

Vulnerability Analysis

The MeetingHub plugin exposes actions that do not enforce the correct capability or nonce checks before executing privileged operations. An attacker can send crafted HTTP requests to the plugin's endpoints and reach code paths that should be restricted to authenticated administrators or specific roles. The EPSS score is 0.285% at the 20.6 percentile, indicating low observed exploitation probability at publication. The scope of impact is limited to integrity, with no direct impact on confidentiality or availability according to the reported CVSS metrics. This aligns with typical broken access control issues in WordPress plugins, where handlers register with admin-ajax.php or REST routes but omit current_user_can() gates.

Root Cause

The root cause is missing authorization logic on one or more plugin actions. The developer registered callable endpoints without verifying that the request originates from a user with sufficient privileges. This maps directly to [CWE-862], where the application performs a security-relevant action without checking whether the actor is authorized. See the Patchstack Vulnerability Report for advisory details.

Attack Vector

Exploitation occurs over the network against the public HTTP interface of the target WordPress site. The attacker sends direct requests to the vulnerable plugin endpoint. No authentication, elevated privileges, or user interaction is required. Because no verified proof-of-concept code is public, defenders should treat the endpoint surface itself as the primary indicator when reviewing web logs.

Detection Methods for CVE-2026-57781

Indicators of Compromise

Unexpected POST or GET requests to MeetingHub plugin endpoints under /wp-admin/admin-ajax.php or the plugin's REST namespace from unauthenticated sessions
Unauthorized changes to meeting objects, settings, or plugin-managed content within wp_options or MeetingHub custom tables
Requests referencing MeetingHub actions originating from source IPs outside the administrator geography or hosting ranges

Detection Strategies

Inventory WordPress sites and identify installations running meetinghub plugin at version <= 1.25.10
Baseline expected HTTP traffic to plugin endpoints and alert on anonymous requests invoking privileged actions
Correlate WordPress audit logs with web access logs to detect state changes not preceded by an authenticated session

Monitoring Recommendations

Enable a WordPress security audit plugin to record option and post modifications with the acting user context
Forward web server access logs and WordPress event logs to a centralized analytics platform for retrospective search
Alert on any HTTP 200 response to plugin AJAX or REST endpoints where the request lacks a valid session cookie

How to Mitigate CVE-2026-57781

Immediate Actions Required

Update the MeetingHub plugin to a version later than 1.25.10 once released by Sovlix
If no patched version is available, deactivate and remove the meetinghub plugin until a fix is published
Review MeetingHub-managed data for unauthorized modifications since the plugin was installed

Patch Information

At publication, the advisory tracks the vulnerability as affecting versions through 1.25.10. Consult the Patchstack Vulnerability Report for the current fixed version and vendor guidance.

Workarounds

Restrict access to /wp-admin/admin-ajax.php and the plugin's REST endpoints using a web application firewall rule that requires authenticated sessions
Apply virtual patching through a WAF to block requests targeting known MeetingHub action names from unauthenticated clients
Enforce IP allow-listing on /wp-admin/ paths for administrative networks only

bash

# Configuration example: nginx rule to block unauthenticated access to plugin endpoints
location ~* /wp-content/plugins/meetinghub/ {
    deny all;
    return 403;
}

location = /wp-admin/admin-ajax.php {
    if ($arg_action ~* "^meetinghub_") {
        set $block_unauth 1;
    }
    if ($http_cookie !~* "wordpress_logged_in") {
        set $block_unauth "${block_unauth}1";
    }
    if ($block_unauth = "11") {
        return 403;
    }
}