CVE-2025-47647: Sidebar Manager Light CSRF Vulnerability

CVE-2025-47647 Overview

CVE-2025-47647 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the OTWthemes Sidebar Manager Light plugin for WordPress. The issue affects all versions of sidebar-manager-light up to and including version 1.18. The vulnerability is categorized under CWE-352 and requires user interaction to exploit. An attacker can craft a malicious web page or link that triggers unintended state-changing actions when an authenticated administrator visits it. Successful exploitation results in limited integrity impact on the affected WordPress site, with no direct impact on confidentiality or availability.

Critical Impact
Attackers can trick authenticated WordPress administrators into performing unintended plugin actions, potentially modifying sidebar configurations without consent.

Affected Products

OTWthemes Sidebar Manager Light WordPress plugin (sidebar-manager-light)
All versions from initial release through 1.18
WordPress sites with the plugin installed and active

Discovery Timeline

2025-05-07 - CVE-2025-47647 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-47647

Vulnerability Analysis

The vulnerability stems from missing or insufficient CSRF protections in the Sidebar Manager Light plugin. State-changing requests handled by the plugin do not properly validate the origin or intent of the request. WordPress plugins are expected to use nonce tokens generated by wp_create_nonce() and validated with check_admin_referer() or wp_verify_nonce() on any request that modifies server state. When these checks are absent or improperly implemented, an attacker can forge requests that execute in the context of an authenticated user session.

Exploitation requires user interaction, meaning the target administrator must visit a malicious page or click a crafted link while logged into WordPress. The scope remains unchanged, and the impact is limited to integrity: an attacker cannot read sensitive data or crash the site directly, but can trigger changes to plugin-managed sidebar configurations.

Root Cause

The root cause is the absence of anti-CSRF token validation on privileged plugin endpoints in sidebar-manager-light versions 1.18 and earlier. Without nonce verification, the plugin trusts any authenticated request regardless of its origin.

Attack Vector

The attack is delivered over the network. An attacker hosts a malicious HTML page containing an auto-submitting form or image tag that issues a request to the vulnerable plugin endpoint. When a logged-in WordPress administrator visits the page, the browser automatically includes session cookies, causing the plugin to process the forged request as legitimate.

No verified proof-of-concept code is publicly available. Refer to the Patchstack WordPress Vulnerability Notice for additional technical context.

Detection Methods for CVE-2025-47647

Indicators of Compromise

Unexpected modifications to sidebar widget configurations in WordPress admin
HTTP POST requests to plugin endpoints lacking a valid _wpnonce parameter
Referrer headers pointing to external domains for administrative plugin actions
WordPress audit log entries showing configuration changes without corresponding admin session activity

Detection Strategies

Inspect web server access logs for requests to plugin admin endpoints with external Referer values
Enable WordPress activity logging plugins to record plugin configuration changes with timestamps and originating IPs
Monitor for administrator sessions that trigger plugin actions immediately after visiting external sites

Monitoring Recommendations

Alert on any HTTP request to wp-admin plugin pages missing nonce parameters
Track version metadata for sidebar-manager-light across managed WordPress installations
Correlate browser referrer telemetry with administrative actions to identify cross-site initiated requests

How to Mitigate CVE-2025-47647

Immediate Actions Required

Identify all WordPress installations running Sidebar Manager Light version 1.18 or earlier
Deactivate the plugin until a patched version is verified and installed
Require administrators to log out of WordPress before browsing untrusted sites
Review recent sidebar configuration changes for unauthorized modifications

Patch Information

At the time of publication, no fixed version has been confirmed in the NVD record. Monitor the Patchstack advisory and the plugin repository for a security update addressing versions above 1.18.

Workarounds

Remove or deactivate sidebar-manager-light if a patch is not yet available
Deploy a web application firewall rule that blocks state-changing requests to the plugin lacking a valid WordPress nonce
Enforce SameSite=Lax or SameSite=Strict cookie attributes for the WordPress session cookie
Restrict WordPress admin access to trusted IP ranges through server-level access controls

bash

# Example: Restrict wp-admin access by IP in nginx
location ^~ /wp-admin/ {
    allow 203.0.113.0/24;
    deny all;
}