CVE-2025-57990: Blog Designer Authorization Bypass Flaw

CVE-2025-57990 Overview

CVE-2025-57990 is a missing authorization vulnerability in the Solwin Infotech Blog Designer plugin for WordPress. The flaw affects all versions of Blog Designer up to and including 3.1.8. The plugin exposes functionality with incorrectly configured access control, allowing authenticated users with low privileges to perform actions that should require higher authorization levels. The weakness is classified under CWE-862: Missing Authorization. Details of the issue are documented in the Patchstack WordPress Vulnerability Report.

Critical Impact
Authenticated attackers with low privileges can invoke restricted plugin operations, resulting in unauthorized modification of blog content and limited service disruption on affected WordPress sites.

Affected Products

Solwin Infotech Blog Designer plugin for WordPress
All versions from n/a through 3.1.8
WordPress sites that install and activate the vulnerable plugin

Discovery Timeline

2025-09-22 - CVE-2025-57990 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-57990

Vulnerability Analysis

The Blog Designer plugin exposes one or more request handlers that do not enforce a proper capability or role check before executing sensitive actions. WordPress plugins typically protect privileged handlers using current_user_can() capability checks and nonce validation through check_admin_referer() or wp_verify_nonce(). When these checks are missing or misconfigured, any authenticated user, including Subscriber-level accounts, can reach code paths intended for administrators or editors.

An attacker with valid but low-privileged credentials can send crafted requests to the vulnerable endpoint over the network without user interaction. Successful exploitation allows limited tampering with plugin-managed data and can cause limited availability impact on plugin functionality. The vulnerability does not directly expose confidential data, but it undermines the site's access control model.

Root Cause

The root cause is broken access control in plugin request handlers. The plugin registers actions that execute privileged logic but omits a capability check appropriate to the action, or relies on authentication alone rather than authorization. This pattern maps to CWE-862, Missing Authorization.

Attack Vector

Exploitation requires network access to the WordPress site and a low-privileged authenticated session. The attacker submits a request to the vulnerable plugin endpoint, for example an admin-ajax or REST route registered by Blog Designer, and the server performs the privileged action without verifying the caller's role. No user interaction is required beyond the attacker's own session.

No public proof-of-concept is listed for CVE-2025-57990. See the Patchstack advisory for vendor-coordinated technical details.

Detection Methods for CVE-2025-57990

Indicators of Compromise

Unexpected requests to Blog Designer plugin endpoints such as admin-ajax.php with plugin-specific action parameters originating from Subscriber or Contributor accounts.
Unauthorized creation, modification, or deletion of Blog Designer settings, layouts, or posts by non-administrative users.
WordPress audit log entries showing privileged plugin actions performed by accounts that lack the corresponding role.

Detection Strategies

Review web server access logs for POST requests to Blog Designer AJAX or REST endpoints correlated with low-privilege user sessions.
Deploy a WordPress security plugin or Web Application Firewall rule that flags calls to plugin actions issued by users below the Editor role.
Compare current plugin configuration and content against a known-good baseline to detect unauthorized changes.

Monitoring Recommendations

Enable WordPress user activity auditing and forward events to a centralized log store for correlation.
Alert on spikes in admin-ajax.php traffic tied to the blog-designer action namespace.
Monitor plugin version inventory across WordPress fleets to identify hosts still running Blog Designer 3.1.8 or earlier.

How to Mitigate CVE-2025-57990

Immediate Actions Required

Update the Blog Designer plugin to a version later than 3.1.8 as soon as the vendor releases a fixed release.
Audit WordPress user accounts and remove or downgrade Subscriber, Contributor, or unused accounts that are not required.
Review Blog Designer content and settings for unauthorized modifications made since the plugin was installed.

Patch Information

Refer to the Patchstack advisory for Blog Designer for the authoritative fixed version and vendor guidance. At the time of the NVD entry the vulnerability affects all versions up to and including 3.1.8.

Workarounds

Deactivate and remove the Blog Designer plugin until a patched version is available if the plugin is not business-critical.
Apply a virtual patch through a WordPress-aware Web Application Firewall that blocks unauthenticated and low-privilege access to Blog Designer endpoints.
Restrict WordPress administrative endpoints such as /wp-admin/admin-ajax.php to trusted networks where feasible.

bash

# Example: restrict access to Blog Designer AJAX actions at the WAF or web server
# Nginx snippet blocking known plugin action names from unauthenticated requests
location = /wp-admin/admin-ajax.php {
    if ($arg_action ~* "^blog_designer_") {
        # require valid WordPress auth cookie; otherwise deny
        if ($http_cookie !~* "wordpress_logged_in_") {
            return 403;
        }
    }
    include fastcgi_params;
    fastcgi_pass php_upstream;
}