CVE-2026-65568: Visual Composer Auth Bypass Vulnerability

CVE-2026-65568 Overview

CVE-2026-65568 is a broken access control vulnerability in the Visual Composer Website Builder plugin for WordPress, affecting versions up to and including 45.15.0. The flaw stems from missing authorization checks [CWE-862], allowing authenticated users with Contributor-level privileges to perform actions beyond their intended role. An attacker with a low-privileged account can leverage the network-accessible endpoint to modify data across security scopes without user interaction. The issue is documented in the Patchstack Vulnerability Report.

Critical Impact
Contributor-level users can bypass access controls in Visual Composer Website Builder, enabling limited integrity impact against WordPress sites running vulnerable plugin versions.

Affected Products

Visual Composer Website Builder plugin for WordPress
Plugin versions <= 45.15.0
WordPress sites with Contributor-level accounts enabled

Discovery Timeline

2026-07-27 - CVE-2026-65568 published to NVD
2026-07-27 - Last updated in NVD database

Technical Details for CVE-2026-65568

Vulnerability Analysis

The vulnerability is a broken access control issue [CWE-862] in the Visual Composer Website Builder WordPress plugin. Contributor accounts, which normally hold restricted publishing privileges, can invoke plugin functionality that should be reserved for higher-privileged roles. The scope change indicates the impact crosses the boundary of the vulnerable component, affecting resources outside the plugin's authorization context. The integrity impact is limited, and confidentiality and availability are not affected.

Root Cause

The root cause is a missing authorization check on one or more plugin actions. The plugin does not verify whether the requesting user holds a capability sufficient to invoke the target operation. Because the request only requires a valid Contributor session, standard WordPress role separation does not prevent the misuse. See the Patchstack Vulnerability Report for advisory details.

Attack Vector

An authenticated attacker sends a network request to a WordPress site running a vulnerable Visual Composer version. The attacker authenticates as a Contributor, which is a role commonly granted on multi-author sites and blogs accepting guest posts. Once authenticated, the attacker calls the affected plugin endpoint directly. No social engineering or user interaction is required. Public proof-of-concept code has not been released for this issue.

Detection Methods for CVE-2026-65568

Indicators of Compromise

Requests to Visual Composer plugin AJAX or REST endpoints originating from Contributor accounts.
Unexpected content, post, or configuration changes performed by low-privileged users.
Newly created or modified WordPress posts, pages, or plugin settings without a corresponding editorial workflow entry.

Detection Strategies

Audit WordPress access logs for authenticated requests to wp-admin/admin-ajax.php and Visual Composer REST routes tied to Contributor session cookies.
Correlate plugin action calls with the invoking user's role and flag calls that exceed Contributor capabilities.
Review the installed Visual Composer Website Builder version and confirm whether it is 45.15.0 or earlier.

Monitoring Recommendations

Enable WordPress audit logging to capture user role, action, and target object for every administrative event.
Alert on privilege-boundary crossings where a Contributor account triggers plugin actions previously seen only from Editor or Administrator roles.
Track outbound plugin update checks and compare deployed versions across sites to identify unpatched instances.

How to Mitigate CVE-2026-65568

Immediate Actions Required

Update Visual Composer Website Builder to a version later than 45.15.0 as soon as the vendor releases a fixed build.
Review all WordPress user accounts and remove Contributor privileges that are no longer required.
Rotate credentials for any Contributor accounts that show anomalous plugin activity.

Patch Information

Refer to the Patchstack Vulnerability Report for the authoritative patch status. Administrators should apply the vendor-supplied update through the WordPress plugin manager or via WP-CLI. Confirm the installed version reports higher than 45.15.0 after upgrading.

Workarounds

Temporarily deactivate the Visual Composer Website Builder plugin on sites where Contributor accounts are broadly provisioned.
Restrict access to wp-admin and plugin AJAX endpoints using a web application firewall rule that blocks Contributor session tokens from calling the affected actions.
Downgrade Contributor accounts to Subscriber where publishing rights are not required.

bash

# Configuration example
# Verify installed Visual Composer version and update via WP-CLI
wp plugin get visualcomposer --field=version
wp plugin update visualcomposer
wp plugin list --status=active --name=visualcomposer