CVE-2025-28884 Overview
CVE-2025-28884 is a Cross-Site Request Forgery (CSRF) vulnerability [CWE-352] affecting the Rajesh Kumar WP Bulk Post Duplicator plugin for WordPress. The flaw impacts all versions of the wp-bulk-post-duplicator plugin from initial release through version 1.2. Attackers can trick authenticated WordPress users into executing unwanted actions on the plugin by delivering a crafted request through a malicious page or link. The vulnerability requires user interaction and can result in unauthorized post duplication or state changes within the affected WordPress site.
Critical Impact
Successful exploitation requires an authenticated user to interact with an attacker-controlled resource, allowing forged plugin actions that impact site integrity.
Affected Products
- WP Bulk Post Duplicator plugin (wp-bulk-post-duplicator) versions up to and including 1.2
- WordPress installations running the vulnerable plugin
- Rajesh Kumar WP Bulk Post Duplicator (all releases through 1.2)
Discovery Timeline
- 2025-03-11 - CVE-2025-28884 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-28884
Vulnerability Analysis
The WP Bulk Post Duplicator plugin fails to implement adequate anti-CSRF protections on state-changing actions. WordPress provides nonce-based validation through functions such as wp_nonce_field() and check_admin_referer(), but the plugin does not validate request authenticity before performing sensitive operations. An attacker who lures an authenticated administrator to a malicious page can trigger requests that the plugin processes as legitimate. The impact is limited to integrity (I:L in the CVSS vector), with no direct effect on confidentiality or availability.
Root Cause
The root cause is missing or insufficient CSRF token validation on action handlers within the plugin. Without validating a per-session nonce tied to the acting user, the plugin cannot distinguish forged cross-origin requests from user-initiated actions. This maps directly to CWE-352: Cross-Site Request Forgery.
Attack Vector
Exploitation follows the standard CSRF pattern. An attacker hosts a page containing a hidden form or JavaScript that submits a request to the target WordPress site's admin endpoint used by the plugin. When an authenticated user visits the malicious page, the browser attaches the user's session cookies and issues the request. The plugin executes the requested action because it lacks a valid nonce check. See the Patchstack advisory for additional technical context.
No verified public proof-of-concept code is available for this CVE.
Detection Methods for CVE-2025-28884
Indicators of Compromise
- Unexpected duplication of posts or pages within WordPress content stores
- HTTP referer headers pointing to external, unrelated domains for requests hitting plugin endpoints
- Admin actions logged from sessions immediately after visits to external sites
Detection Strategies
- Review WordPress access logs for POST requests to plugin action URLs lacking a valid _wpnonce parameter
- Correlate admin-user browsing telemetry with plugin action timestamps to identify off-origin trigger patterns
- Inspect WordPress audit logs for bulk duplication events not initiated through the plugin admin UI
Monitoring Recommendations
- Enable a WordPress activity logging plugin to record plugin actions with source referer data
- Monitor web server logs for requests to wp-admin endpoints with external referers targeting the WP Bulk Post Duplicator plugin
- Alert on anomalous spikes in post duplication activity within short time windows
How to Mitigate CVE-2025-28884
Immediate Actions Required
- Deactivate the WP Bulk Post Duplicator plugin until a patched version is confirmed available
- Restrict WordPress administrative access to trusted networks and enforce session logout after idle periods
- Train administrators to avoid browsing untrusted sites while authenticated to WordPress admin
Patch Information
As of the last NVD update on 2026-06-17, no fixed version beyond 1.2 is listed in the enriched data. Administrators should consult the Patchstack advisory for the latest remediation guidance and any released updates.
Workarounds
- Remove the plugin entirely if a patched version is not yet published
- Deploy a Web Application Firewall rule that enforces referer or origin validation on plugin action endpoints
- Require administrators to use separate browser profiles for WordPress management to reduce CSRF exposure
# Configuration example: disable the plugin via WP-CLI
wp plugin deactivate wp-bulk-post-duplicator
wp plugin delete wp-bulk-post-duplicator
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
