CVE-2026-53736: Easy Twitter Feeds CSRF Vulnerability

CVE-2026-53736 Overview

CVE-2026-53736 is a cross-site request forgery (CSRF) vulnerability in the Easy Twitter Feeds WordPress plugin before version 1.2.13. The flaw resides in the duplicate_post action handler, which fails to perform nonce verification before executing privileged operations. An attacker can craft a malicious link that, when visited by an authenticated WordPress user, duplicates any post regardless of post type. The issue is tracked under CWE-352 and requires user interaction to succeed.

Critical Impact

Authenticated WordPress users tricked into visiting attacker-controlled links can be coerced into duplicating arbitrary posts, leading to content integrity issues and potential abuse of duplicated draft content.

Affected Products

• Easy Twitter Feeds WordPress plugin versions before 1.2.13
• WordPress sites with the plugin installed and active
• Any WordPress role authorized to invoke the duplicate_post action

Discovery Timeline

• 2026-06-10 - CVE-2026-53736 published to the National Vulnerability Database
• 2026-06-10 - Last updated in NVD database

Technical Details for CVE-2026-53736

Vulnerability Analysis

The Easy Twitter Feeds plugin exposes a duplicate_post action handler intended to clone existing posts. The handler authenticates the request via the active WordPress session but does not validate a CSRF token (WordPress nonce) before executing the duplication logic. This omission violates the WordPress security model, which requires nonce verification through check_admin_referer() or wp_verify_nonce() on any state-changing request.

Because the action handler accepts requests without verifying intent, an attacker can build a URL containing the duplication parameters and trick an authenticated user into loading it. The browser automatically attaches the session cookies, and the server processes the request as legitimate. The attack succeeds against any post type the targeted user is permitted to duplicate, including drafts, custom post types, and private content.

Root Cause

The root cause is missing CSRF protection [CWE-352] in the duplicate_post action handler. The plugin trusts the authenticated session as proof of user intent rather than requiring a server-issued nonce bound to the request.

Attack Vector

Exploitation is remote over the network and requires user interaction. The attacker hosts a page containing an image tag, link, or auto-submitting form pointing to the vulnerable WordPress endpoint with the duplicate_post action and a target post identifier. When an authenticated administrator or editor visits the page, their browser issues the request with valid session cookies, and the server completes the post duplication. The vulnerability mechanism is described in the VulnCheck Advisory for Easy Twitter Feeds.

Detection Methods for CVE-2026-53736

Indicators of Compromise

• Unexpected duplicate posts appearing in the WordPress wp_posts table with sequential timestamps
• HTTP requests to admin-ajax.php or admin URLs invoking the duplicate_post action without a Referer header matching the site origin
• Authenticated user sessions originating duplication requests immediately after visiting external URLs

Detection Strategies

• Review web server access logs for duplicate_post action calls and correlate against the Referer header to identify cross-origin requests.
• Audit the WordPress post table for clones created outside normal editorial workflows, focusing on rapid duplication patterns.
• Enable WordPress activity logging plugins to capture user-initiated duplication events with full request metadata.

Monitoring Recommendations

• Alert on WordPress admin actions originating from external referrers or absent referrer headers.
• Monitor the rate of post creation per user account to detect anomalous duplication volume.
• Track plugin version inventory to confirm Easy Twitter Feeds is upgraded to 1.2.13 or later across all sites.

How to Mitigate CVE-2026-53736

Immediate Actions Required

• Update the Easy Twitter Feeds plugin to version 1.2.13 or later through the WordPress plugin manager.
• If the plugin is not in active use, deactivate and remove it from the WordPress installation.
• Force re-authentication of administrative users and review recent post activity for unauthorized duplications.

Patch Information

The vendor addressed the issue in Easy Twitter Feeds version 1.2.13 by adding nonce verification to the duplicate_post action handler. Plugin updates are available through the official WordPress Plugin repository.

Workarounds

• Restrict access to the WordPress admin area using IP allowlists at the web server or WAF layer until patching is complete.
• Deploy a web application firewall rule that blocks requests to the duplicate_post action lacking a valid same-origin Referer header.
• Educate administrative users to log out of WordPress sessions before browsing untrusted sites.

# Example WordPress CLI update command
wp plugin update easy-twitter-feeds --version=1.2.13