CVE-2024-51639 Overview
CVE-2024-51639 is a Cross-Site Request Forgery (CSRF) vulnerability in the Hints Naver Blog naver-blog-api plugin for WordPress. The flaw allows an attacker to chain CSRF with Stored Cross-Site Scripting (XSS), injecting persistent malicious scripts into the plugin's configuration. The issue affects all versions of the Naver Blog plugin up to and including version 1.0. Exploitation requires an authenticated administrator to be tricked into visiting an attacker-controlled page while logged in. The injected JavaScript executes in the browser context of any user who later views the affected page, enabling session theft, administrative account takeover, or further site compromise. The vulnerability is tracked under CWE-352: Cross-Site Request Forgery.
Critical Impact
Successful exploitation enables persistent JavaScript execution in administrator browsers, leading to potential WordPress site takeover through stolen sessions or injected backdoors.
Affected Products
- WordPress plugin: Hints Naver Blog (naver-blog-api)
- Affected versions: all releases up to and including 1.0
- Deployment: WordPress sites with the Naver Blog plugin installed and activated
Discovery Timeline
- 2024-11-19 - CVE-2024-51639 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-51639
Vulnerability Analysis
The Naver Blog plugin exposes state-changing administrative actions without verifying the origin of the request. The plugin's settings handlers do not validate a WordPress nonce (wp_nonce_field / check_admin_referer) before accepting submitted input. This omission allows a remote attacker to forge an authenticated request from a victim's browser. Because the submitted values are stored and later rendered without sufficient output encoding, the CSRF primitive escalates into a Stored XSS condition. The attack chain requires user interaction, typically luring an authenticated administrator to a malicious URL or page containing an auto-submitting form.
Root Cause
The root cause is missing CSRF token validation on plugin configuration endpoints, combined with insufficient sanitization and escaping of stored input. Plugin code paths that update settings rely solely on the WordPress authentication cookie to authorize requests, which the browser automatically attaches. There is no secondary check tying the request to the originating admin interface.
Attack Vector
An attacker hosts a webpage containing a hidden HTML form targeting the vulnerable plugin endpoint, with form fields carrying a malicious JavaScript payload. When an authenticated WordPress administrator visits the page, the browser auto-submits the request, and the plugin stores the payload. Any subsequent visit to the affected admin or public page executes the script in the victim's browser context.
No verified public proof-of-concept is available. See the Patchstack Vulnerability Advisory for technical details.
Detection Methods for CVE-2024-51639
Indicators of Compromise
- Unexpected <script>, onerror, or onload strings inside wp_options rows or plugin-specific tables associated with naver-blog-api.
- Administrator sessions originating from unfamiliar IP addresses shortly after a settings change in the Naver Blog plugin.
- Outbound HTTP requests from admin browsers to unknown domains coinciding with rendering of plugin-controlled pages.
Detection Strategies
- Inspect plugin configuration values stored in the WordPress database for HTML or JavaScript content where plain text is expected.
- Monitor WordPress access logs for POST requests to plugin admin endpoints lacking a valid _wpnonce parameter or with a Referer header outside the site's own domain.
- Run static scans of installed plugin code for admin_post_ and admin-ajax.php handlers that omit check_admin_referer or wp_verify_nonce calls.
Monitoring Recommendations
- Enable a Web Application Firewall (WAF) rule set that flags cross-origin POST requests to /wp-admin/ endpoints.
- Alert on changes to plugin option rows in wp_options using database integrity monitoring.
- Capture browser-side Content Security Policy (CSP) violation reports to surface unexpected inline script execution on admin pages.
How to Mitigate CVE-2024-51639
Immediate Actions Required
- Deactivate and remove the Hints Naver Blog plugin until a patched version is confirmed available from the vendor.
- Rotate all WordPress administrator passwords and invalidate active sessions via wp_logout_user or by changing user salts in wp-config.php.
- Audit the wp_options table and plugin-specific storage for injected scripts and remove any malicious payloads.
Patch Information
No patched release is documented in the available advisory data. The vulnerability affects Naver Blog versions through 1.0. Site operators should consult the Patchstack Vulnerability Advisory for vendor updates and confirm fix availability before re-enabling the plugin.
Workarounds
- Restrict access to /wp-admin/ paths by IP address using web server rules until the plugin is removed or patched.
- Deploy a virtual patching rule in a WAF that requires a valid _wpnonce parameter on plugin admin POST requests.
- Enforce a strict Content Security Policy on the WordPress admin interface to block inline script execution from injected payloads.
# Example: Apache configuration restricting wp-admin to a trusted IP
<Directory "/var/www/html/wp-admin">
Require ip 203.0.113.10
</Directory>
# Example: Remove the vulnerable plugin via WP-CLI
wp plugin deactivate naver-blog-api
wp plugin delete naver-blog-api
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
