CVE-2025-47468: Hash Form WordPress Plugin CSRF Vulnerability

CVE-2025-47468 Overview

CVE-2025-47468 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the Hash Form WordPress plugin developed by hashthemes. The flaw impacts all versions from unspecified releases through 1.2.8. An attacker can trick an authenticated user into submitting an unintended request to the vulnerable plugin. The issue is tracked under CWE-352: Cross-Site Request Forgery.

Critical Impact
Successful exploitation allows attackers to perform unauthorized state-changing actions on behalf of an authenticated WordPress user, potentially altering form data or plugin configuration through crafted requests delivered via social engineering.

Affected Products

hashthemes Hash Form plugin for WordPress
All versions up to and including 1.2.8
WordPress sites with the hash-form plugin installed and active

Discovery Timeline

2025-05-07 - CVE-2025-47468 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-47468

Vulnerability Analysis

The Hash Form plugin fails to properly validate the origin of state-changing HTTP requests. WordPress plugins are expected to enforce anti-CSRF protections using nonces generated with wp_create_nonce() and verified with check_admin_referer() or wp_verify_nonce(). When these checks are missing or incomplete, browsers automatically attach session cookies to cross-origin requests, allowing attackers to piggyback on an authenticated user's session.

Exploitation requires user interaction, typically clicking a malicious link or visiting an attacker-controlled page while logged into WordPress. The scope remains unchanged, and the vulnerability does not directly disclose data, but it can modify plugin state or submitted form content.

Root Cause

The root cause is the absence or improper verification of anti-CSRF tokens on privileged plugin endpoints in hash-form through version 1.2.8. Requests are accepted based on cookie-based authentication alone without validating request origin.

Attack Vector

The attack is delivered over the network and requires the victim to interact with attacker-supplied content. An attacker hosts a malicious page containing a forged form or JavaScript that auto-submits a request to the vulnerable plugin endpoint. If the victim is authenticated to the target WordPress site, the browser forwards session cookies and the plugin processes the request as legitimate. See the Patchstack WordPress Vulnerability Notice for advisory details.

Detection Methods for CVE-2025-47468

Indicators of Compromise

Unexpected POST requests to Hash Form plugin endpoints originating from third-party Referer headers.
Modifications to form configurations or submitted entries without corresponding administrative session activity in access logs.
Requests to hash-form endpoints missing valid WordPress nonce parameters (_wpnonce).

Detection Strategies

Inspect web server access logs for POST requests to /wp-admin/admin-ajax.php or plugin routes where the Referer header does not match the site's own domain.
Correlate authenticated user activity with plugin configuration changes to identify actions that occurred outside of normal administrative workflows.
Deploy a Web Application Firewall (WAF) ruleset that flags requests to WordPress plugin endpoints lacking valid nonce tokens.

Monitoring Recommendations

Enable WordPress audit logging to capture form and plugin setting changes with timestamps and originating IP addresses.
Monitor for unusual spikes in traffic to hash-form endpoints, especially from external referrers.
Alert on administrator accounts triggering plugin actions immediately after visiting external URLs.

How to Mitigate CVE-2025-47468

Immediate Actions Required

Update the Hash Form plugin to a version later than 1.2.8 once the vendor releases a patched build.
Restrict administrative access to trusted networks and enforce short session lifetimes for privileged WordPress users.
Require administrators to log out of WordPress sessions before browsing untrusted content.

Patch Information

At the time of publication, the advisory covers versions through 1.2.8. Site administrators should monitor the Patchstack advisory and the WordPress plugin repository for a fixed release, then apply the update across all environments.

Workarounds

Temporarily deactivate the Hash Form plugin until a patched version is available if the plugin is not business-critical.
Deploy a WAF rule that enforces same-origin Referer and Origin header validation for requests targeting hash-form endpoints.
Require re-authentication for administrative actions by shortening WordPress cookie lifetimes and enforcing multi-factor authentication.

bash

# Configuration example: Apache mod_headers rule to block cross-origin POSTs to the plugin
<LocationMatch "/wp-content/plugins/hash-form/">
  SetEnvIfNoCase Referer "^https://your-domain\.example/" local_ref=1
  <LimitExcept GET HEAD>
    Require env local_ref
  </LimitExcept>
</LocationMatch>