CVE-2025-49896: WP Discord Post Plus CSRF Vulnerability

CVE-2025-49896 Overview

CVE-2025-49896 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the WordPress plugin WP Discord Post Plus – Supports Unlimited Channels by wptasker. The flaw exists in all versions up to and including 1.0.2. An attacker can craft a malicious web page that, when visited by an authenticated WordPress user, triggers unintended state-changing actions in the plugin without the user's consent. The vulnerability is tracked under CWE-352: Cross-Site Request Forgery and requires no privileges to initiate, though it does depend on tricking a logged-in target into loading attacker-controlled content.

Critical Impact
Attackers can abuse authenticated WordPress sessions to perform unauthorized plugin actions, leading to limited confidentiality impact on affected sites.

Affected Products

WP Discord Post Plus – Supports Unlimited Channels versions n/a through 1.0.2
WordPress installations with the vulnerable plugin active
Sites where administrators or privileged users interact with untrusted web content

Discovery Timeline

2025-08-20 - CVE CVE-2025-49896 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-49896

Vulnerability Analysis

The vulnerability stems from missing or improperly validated anti-CSRF tokens in state-changing endpoints exposed by the WP Discord Post Plus plugin. WordPress provides nonce mechanisms through wp_nonce_field() and check_admin_referer() for exactly this purpose. When these controls are absent, any request originating from an authenticated user's browser is treated as legitimate by the plugin. An attacker can host a malicious form or use JavaScript to submit a crafted request to the target WordPress site. The browser automatically attaches the victim's session cookies, and the plugin processes the action as if the user had initiated it.

The attack requires no authentication on the attacker's part but does require user interaction from a logged-in victim, typically through phishing or a watering-hole page. Refer to the Patchstack WordPress Vulnerability Advisory for technical specifics.

Root Cause

The plugin fails to verify request origin using WordPress nonces or equivalent CSRF tokens on sensitive handlers. Without token validation, the server cannot distinguish between a legitimate user-driven request and one forged by a third-party site.

Attack Vector

The attack is delivered over the network. An attacker crafts a page containing an auto-submitting form or fetch request pointing to the vulnerable plugin endpoint. When a logged-in WordPress administrator or user visits the page, the browser transmits the request with valid authentication cookies, and the plugin executes the requested action.

No verified public exploit code is available. The vulnerability is described in prose based on the CWE-352 classification and vendor advisory details.

Detection Methods for CVE-2025-49896

Indicators of Compromise

Unexpected configuration changes in the WP Discord Post Plus plugin settings
Discord webhook messages originating from the WordPress site at times outside normal administrative activity
HTTP POST or GET requests to plugin endpoints with Referer headers pointing to external, untrusted domains

Detection Strategies

Review web server access logs for state-changing requests to /wp-admin/ paths related to wp-discord-post-plus with mismatched or missing Referer and Origin headers
Correlate authenticated user session activity against unusual outbound Discord webhook traffic
Audit WordPress plugin activity logs for administrative actions performed without corresponding admin panel navigation

Monitoring Recommendations

Enable WordPress audit logging plugins to record all plugin configuration changes with timestamps and originating IP addresses
Monitor for anomalous traffic patterns to plugin AJAX and admin-post endpoints
Alert on outbound requests to discord.com/api/webhooks/ that do not align with expected publishing workflows

How to Mitigate CVE-2025-49896

Immediate Actions Required

Deactivate the WP Discord Post Plus – Supports Unlimited Channels plugin until a patched version is available
Advise all administrative users to log out of WordPress sessions before browsing untrusted sites
Restrict WordPress admin panel access to trusted IP ranges through web server or WAF rules

Patch Information

At the time of publication, no fixed version is listed in the advisory. Versions up to and including 1.0.2 are affected. Monitor the Patchstack advisory and the WordPress plugin repository for update availability.

Workarounds

Remove or disable the plugin from active WordPress installations until a patched release is verified
Deploy a web application firewall rule to block requests to plugin endpoints that lack a valid same-origin Referer header
Enforce short session lifetimes for WordPress administrators to reduce the window of exploitable authenticated sessions

bash

# Example: disable the plugin via WP-CLI
wp plugin deactivate wp-discord-post-plus
wp plugin delete wp-discord-post-plus