CVE-2025-30854: Serial Codes Generator CSRF Vulnerability

CVE-2025-30854 is a Cross-Site Request Forgery vulnerability in Vollstart Serial Codes Generator and Validator with WooCommerce Support plugin. This flaw affects versions up to 2.7.7 and could allow attackers to perform unauthorized actions. This article covers technical details, affected versions, impact assessment, and mitigation strategies.

CVE-2025-30854 Overview

CVE-2025-30854 is a Cross-Site Request Forgery (CSRF) vulnerability in the Vollstart Serial Codes Generator and Validator with WooCommerce Support plugin for WordPress. The flaw affects all plugin versions up to and including 2.7.7. An attacker can trick an authenticated user into submitting forged requests that modify plugin data without consent. The weakness maps to [CWE-352] and requires user interaction to succeed. Exploitation targets integrity of plugin-managed serial code data on the affected WordPress site.

Critical Impact
Successful exploitation allows attackers to trigger unauthorized state-changing actions in the Serial Codes Generator and Validator plugin by leveraging an authenticated user's session.

Affected Products

Vollstart Serial Codes Generator and Validator with WooCommerce Support plugin
Plugin slug: serial-codes-generator-and-validator
All versions from n/a through 2.7.7

Discovery Timeline

2025-03-27 - CVE-2025-30854 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-30854

Vulnerability Analysis

The plugin fails to validate the origin and authenticity of state-changing HTTP requests. Attackers craft malicious pages containing hidden forms or scripts targeting plugin endpoints. When an authenticated WordPress user with sufficient privileges visits the attacker-controlled page, the browser submits the forged request using the user's session cookies. The plugin processes the request as legitimate because CSRF protections are absent or incomplete. Impact is limited to integrity effects on plugin-managed data such as serial code entries and configuration.

Root Cause

The root cause is missing or insufficient CSRF token validation on plugin action handlers. WordPress provides wp_nonce_field() and check_admin_referer() primitives for this purpose. The plugin does not enforce these checks consistently on privileged actions through version 2.7.7. Without a per-request unpredictable token, the server cannot distinguish user-initiated requests from cross-site forgeries.

Attack Vector

Exploitation occurs over the network and requires user interaction. The attacker hosts a malicious page or delivers a crafted link to a WordPress administrator or privileged user. When that user is authenticated to the target site and visits the page, the browser transmits the forged request with valid session cookies. The plugin then executes the state-changing action under the victim's identity. No credentials, elevated privileges, or prior access to the WordPress site are required by the attacker.

See the Patchstack WordPress Vulnerability advisory for technical details.

Detection Methods for CVE-2025-30854

Indicators of Compromise

Unexpected modifications to serial codes, WooCommerce products, or plugin settings performed by an authenticated user during normal browsing sessions.
Web server access logs showing POST requests to plugin endpoints with Referer headers pointing to external or unrelated domains.
WordPress admin activity from user accounts at times inconsistent with their typical usage patterns.

Detection Strategies

Inspect HTTP request logs for state-changing requests to serial-codes-generator-and-validator endpoints that lack a valid WordPress nonce parameter.
Correlate administrator browser activity with outbound requests to external sites immediately preceding plugin state changes.
Monitor WordPress audit logs for creation, modification, or deletion of serial codes without a corresponding admin UI navigation trail.

Monitoring Recommendations

Enable a WordPress activity logging plugin to capture user, IP address, and timestamp for every plugin action.
Alert on plugin administrative actions originating from unusual Referer values or from sessions with recent cross-origin navigation.
Track versions of installed WordPress plugins across the estate and flag any instance of serial-codes-generator-and-validator at or below 2.7.7.

How to Mitigate CVE-2025-30854

Immediate Actions Required

Update the Serial Codes Generator and Validator with WooCommerce Support plugin to a version later than 2.7.7 as soon as the vendor releases a fix.
If no patched version is available, deactivate and remove the plugin from all affected WordPress installations.
Force administrators and privileged users to log out and re-authenticate to invalidate any active sessions that could be abused.

Patch Information

At time of publication, the vulnerability affects all versions up to and including 2.7.7. Consult the Patchstack advisory for the latest fixed version and vendor guidance.

Workarounds

Deploy a Web Application Firewall (WAF) rule that blocks POST requests to plugin endpoints when the Referer header is missing or does not match the site origin.
Require administrators to use a dedicated browser or profile for WordPress administration to reduce the risk of cross-site request forgery from unrelated tabs.
Restrict administrative access by IP allowlist at the web server or WAF layer to limit exposure while a patch is unavailable.

bash

# Example Apache .htaccess rule to require same-origin Referer on plugin POSTs
<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteCond %{REQUEST_METHOD} POST
  RewriteCond %{REQUEST_URI} serial-codes-generator-and-validator [NC]
  RewriteCond %{HTTP_REFERER} !^https?://(www\.)?example\.com/ [NC]
  RewriteRule .* - [F,L]
</IfModule>