CVE-2025-47514 Overview
CVE-2025-47514 is a Cross-Site Request Forgery (CSRF) vulnerability that leads to Stored Cross-Site Scripting (XSS) in the ELI's Related Posts Footer Links and Widget WordPress plugin (spostarbust). The flaw affects all plugin versions up to and including 1.2.04.20. An attacker who tricks an authenticated administrator into visiting a crafted page can submit forged requests to the plugin and persist malicious JavaScript in the site. The stored payload executes in the browsers of subsequent visitors, including privileged users. The weakness maps to CWE-352: Cross-Site Request Forgery.
Critical Impact
Successful exploitation lets an unauthenticated attacker plant persistent JavaScript through an administrator's authenticated session, enabling session theft, account takeover, and further site compromise.
Affected Products
- ELI's Related Posts Footer Links and Widget (spostarbust) WordPress plugin
- All plugin versions from n/a through 1.2.04.20
- WordPress sites running the vulnerable plugin with authenticated administrator sessions
Discovery Timeline
- 2025-05-07 - CVE-2025-47514 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-47514
Vulnerability Analysis
The plugin exposes administrative actions that change stored plugin settings without verifying request origin. The handler accepts state-changing POST requests but does not validate a WordPress nonce or check the HTTP Referer against the site origin. Because the input written into settings is rendered back into pages without sufficient output encoding, attacker-controlled JavaScript persists as Stored XSS. The combined CSRF and XSS chain converts a passive lure into persistent script execution against any visitor, including administrators. User interaction is required, since the victim must load the attacker's page while authenticated to the target WordPress site.
Root Cause
The root cause is missing CSRF protection on plugin configuration endpoints, compounded by insufficient sanitization and escaping of stored settings values. WordPress provides wp_nonce_field(), check_admin_referer(), and wp_verify_nonce() for CSRF defense, along with sanitize_text_field() and esc_html() for output handling. The vulnerable plugin code paths do not consistently apply these controls before persisting and rendering user-supplied data.
Attack Vector
The attack is network-based and requires user interaction. An attacker hosts a page containing a hidden form or fetch() call that targets the plugin's admin-post.php or AJAX endpoint. When a logged-in administrator visits the page, the browser submits authenticated cookies along with the forged request. The plugin accepts the request, writes the attacker's payload into settings, and the payload renders as Stored XSS on subsequent page loads. Because the scope is changed (S:C), the injected script can affect resources beyond the initial vulnerable component, including other authenticated sessions in the browser.
No verified exploit code is publicly available. See the PatchStack Vulnerability Report for additional context.
Detection Methods for CVE-2025-47514
Indicators of Compromise
- Unexpected <script> tags, event handlers, or external script src URLs appearing in plugin settings or rendered post footers.
- New or modified rows in the wp_options table tied to the spostarbust plugin containing HTML or JavaScript.
- Outbound requests from visitor browsers to unfamiliar domains originating on pages that load the related-posts widget.
Detection Strategies
- Review WordPress access logs for POST requests to admin-post.php or plugin AJAX endpoints with Referer headers from external domains.
- Diff current plugin option values against a known-good baseline to identify injected markup.
- Scan rendered pages for inline scripts and unexpected DOM mutations introduced after plugin updates or admin activity.
Monitoring Recommendations
- Forward WordPress, web server, and WAF logs to a centralized analytics platform and alert on administrator POSTs missing valid same-origin Referer headers.
- Monitor administrator browsing telemetry for visits to untrusted domains immediately preceding plugin setting changes.
- Track plugin file integrity and database option changes to flag unauthorized configuration modifications.
How to Mitigate CVE-2025-47514
Immediate Actions Required
- Deactivate the ELI's Related Posts Footer Links and Widget plugin until a patched version above 1.2.04.20 is confirmed available.
- Audit plugin settings and stored post metadata for injected scripts, and restore clean values from backup if tampering is found.
- Force a password reset and session invalidation for all WordPress administrator accounts to remove any hijacked sessions.
Patch Information
At the time of NVD publication, no fixed version is listed for the spostarbust plugin. The advisory indicates all versions through 1.2.04.20 are affected. Monitor the PatchStack Vulnerability Report and the plugin repository for an updated release and apply it immediately when published.
Workarounds
- Remove the plugin entirely and replace it with an actively maintained related-posts alternative that enforces nonce validation.
- Deploy a Web Application Firewall rule that blocks cross-origin POSTs to wp-admin/admin-post.php and plugin AJAX handlers.
- Restrict WordPress administrator accounts to dedicated browsers or profiles to reduce the chance of CSRF lures executing in authenticated contexts.
- Enforce a strict Content Security Policy that disallows inline scripts and limits script sources to trusted origins.
# Example WordPress hardening: disable the vulnerable plugin via WP-CLI
wp plugin deactivate spostarbust
wp plugin delete spostarbust
# Verify no residual injected script remains in plugin options
wp option list --search='*spostarbust*' --format=table
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
