CVE-2025-52783: WooCommerce CSRF & Stored XSS Flaw

CVE-2025-52783 Overview

CVE-2025-52783 is a Cross-Site Request Forgery (CSRF) vulnerability in the themelocation Change Cart button Colors WooCommerce plugin (wc-style) for WordPress. The flaw affects all versions up to and including 1.0. Because the plugin lacks CSRF token validation on state-changing requests, an attacker can trick an authenticated administrator into submitting a forged request that stores attacker-controlled JavaScript. The result is a Stored Cross-Site Scripting (XSS) condition triggered via CSRF, classified under CWE-352.

Critical Impact
A successful attack injects persistent JavaScript into the WooCommerce site, enabling session theft, admin account takeover, and arbitrary actions performed in the victim's browser context.

Affected Products

themelocation Change Cart button Colors WooCommerce plugin (wc-style)
All versions from initial release through 1.0
WordPress sites running WooCommerce with this plugin installed

Discovery Timeline

2025-06-20 - CVE-2025-52783 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-52783

Vulnerability Analysis

The plugin exposes administrative functionality that modifies stored configuration values used to render cart button styling. The request handler accepts POST submissions without verifying a WordPress nonce or origin header. An attacker hosts a malicious page containing a hidden form or fetch() call that targets the plugin's settings endpoint. When a logged-in WordPress administrator visits the attacker's page, the browser automatically attaches authentication cookies and submits the forged request.

Because the plugin also fails to sanitize and escape the submitted style values, the attacker can inject HTML and JavaScript payloads that are persisted in the database. Each subsequent page render that outputs the stored style content executes the attacker-controlled script in every visitor's browser, including other administrators.

The attack chain combines two weaknesses: missing CSRF protection on the configuration save action and missing output encoding when the value is later rendered. User interaction is required since the administrator must visit the attacker-controlled page while authenticated.

Root Cause

The root cause is the absence of nonce verification using wp_verify_nonce() or check_admin_referer() on the plugin's settings save handler. Additionally, input is stored without sanitization helpers such as sanitize_text_field() and rendered without esc_attr() or esc_html(), enabling the Stored XSS payload to persist and execute.

Attack Vector

Exploitation requires the attacker to lure an authenticated WordPress administrator to a malicious URL. The forged request changes plugin settings to embed a JavaScript payload inside the cart button style output. From that point, the payload executes for every site visitor or admin who loads pages where the style is rendered, completing the Stored XSS impact. See the Patchstack advisory for additional technical detail.

Detection Methods for CVE-2025-52783

Indicators of Compromise

Unexpected <script> tags, javascript: URIs, or event handlers stored in WooCommerce style-related options in wp_options
Outbound HTTP requests from visitor browsers to unknown domains originating on cart or checkout pages
Recently modified plugin settings without a corresponding admin login from a known source IP
New or modified administrator accounts created shortly after a settings change

Detection Strategies

Review HTTP referer logs for POST requests to the plugin's admin settings endpoint that originate from external domains
Scan the WordPress database for stored option values containing <script, onerror=, or onload= substrings
Use a web application firewall to log and alert on POST requests to plugin admin actions missing the _wpnonce parameter
Compare current plugin configuration against a known-good baseline on a recurring schedule

Monitoring Recommendations

Enable WordPress audit logging for plugin settings changes and administrator authentication events
Configure Content Security Policy (CSP) headers and alert on CSP violation reports
Monitor for anomalous JavaScript execution on storefront pages using browser-side script integrity checks
Track plugin file integrity and database option changes to detect unauthorized modifications

How to Mitigate CVE-2025-52783

Immediate Actions Required

Deactivate and remove the Change Cart button Colors WooCommerce plugin until a fixed version is released
Audit the wp_options table and remove any malicious script content from plugin-related entries
Force password resets and invalidate active sessions for all administrator accounts
Review recent administrator activity and roll back any unauthorized changes

Patch Information

At the time of publication, no patched version is listed in the Patchstack advisory. All versions through 1.0 remain vulnerable. Site operators should monitor the plugin repository for an updated release and apply it immediately once available.

Workarounds

Remove the plugin entirely and apply cart button styling through theme CSS or an actively maintained alternative
Restrict access to /wp-admin/ by IP allowlist to reduce CSRF exposure for administrator sessions
Deploy a web application firewall rule that blocks state-changing POST requests to plugin endpoints lacking a valid _wpnonce parameter
Enforce a strict Content Security Policy that disallows inline scripts on storefront pages

bash

# Example WAF rule (ModSecurity) blocking plugin admin POSTs without a nonce
SecRule REQUEST_METHOD "@streq POST" \
  "chain,id:1052783,phase:2,deny,status:403,log,msg:'CVE-2025-52783 CSRF block'"
  SecRule REQUEST_URI "@contains /wp-admin/admin.php?page=wc-style" \
    "chain"
    SecRule &ARGS:_wpnonce "@eq 0"