CVE-2025-48102: GoUrl Bitcoin Gateway Stored XSS Vulnerability

CVE-2025-48102 Overview

CVE-2025-48102 is a stored Cross-Site Scripting (XSS) vulnerability in the GoUrl Bitcoin Payment Gateway & Paid Downloads & Membership plugin for WordPress. The flaw affects all plugin versions up to and including 1.6.6. The plugin fails to neutralize user-supplied input before rendering it in web pages, allowing an authenticated attacker with high privileges to inject persistent JavaScript payloads. Successful exploitation requires user interaction and can affect resources beyond the vulnerable component due to a scope change.

Critical Impact
An authenticated attacker can store malicious scripts that execute in the browsers of site visitors and administrators, enabling session theft, content manipulation, and pivoting to broader site compromise.

Affected Products

GoUrl Bitcoin Payment Gateway & Paid Downloads & Membership plugin for WordPress
All versions from initial release through 1.6.6
WordPress sites using the gourl-bitcoin-payment-gateway-paid-downloads-membership plugin slug

Discovery Timeline

2025-09-05 - CVE-2025-48102 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-48102

Vulnerability Analysis

The vulnerability is classified under [CWE-79]: Improper Neutralization of Input During Web Page Generation. The GoUrl plugin accepts input from privileged users and stores it in the WordPress database. When the stored content is later rendered in the browser, the plugin does not apply proper output encoding or sanitization. This allows arbitrary HTML and JavaScript to execute in the context of the site's origin.

Because the payload is persistent, every user who visits the affected page triggers the injected script. The scope change indicated in the CVSS vector means the injected script can act on resources outside the plugin, such as the WordPress admin session or third-party embedded content.

Root Cause

The root cause is missing or insufficient sanitization of input fields exposed through the plugin's administrative interface. The plugin does not apply WordPress functions such as sanitize_text_field(), wp_kses(), or esc_html() to input before storage and rendering. As a result, script tags and event handler attributes pass through unchanged.

Attack Vector

An attacker with high-privilege access to the WordPress admin panel submits a crafted payload through a vulnerable plugin field. The payload is stored in the database and rendered in pages viewed by other users. When a victim loads the affected page, the injected JavaScript executes with the privileges of that user session. Refer to the Patchstack Vulnerability Report for additional technical context. No verified public exploit code is available at this time.

Detection Methods for CVE-2025-48102

Indicators of Compromise

Unexpected <script> tags, on* event handlers, or javascript: URIs stored within GoUrl plugin database entries or wp_options records
Outbound HTTP requests from admin browser sessions to unfamiliar domains immediately after loading GoUrl configuration or transaction pages
New or modified WordPress administrator accounts created shortly after plugin administrators accessed affected pages

Detection Strategies

Audit WordPress database tables for HTML or JavaScript content within plugin-related rows, particularly fields associated with gourl settings
Review web server access logs for POST requests to plugin admin endpoints containing encoded script payloads
Monitor browser Content Security Policy (CSP) violation reports for inline script executions originating from admin pages

Monitoring Recommendations

Enable file integrity monitoring across the wp-content/plugins/gourl-bitcoin-payment-gateway-paid-downloads-membership/ directory
Log and alert on all administrative changes to plugin configuration fields
Track authenticated admin session anomalies such as unexpected cookie access or DOM modifications on plugin-managed pages

How to Mitigate CVE-2025-48102

Immediate Actions Required

Identify all WordPress installations running the GoUrl Bitcoin Payment Gateway plugin at version 1.6.6 or earlier
Restrict administrative access to trusted personnel and enforce multi-factor authentication on high-privilege accounts
Review recent plugin configuration changes for injected script content and remove suspicious entries

Patch Information

No fixed version is listed in the NVD entry at the time of publication. Site operators should monitor the plugin's WordPress.org listing and the Patchstack Vulnerability Report for a patched release. Until a patch is available, consider deactivating the plugin on production sites that process sensitive transactions.

Workarounds

Deactivate and remove the GoUrl plugin until an updated version is released
Deploy a Web Application Firewall (WAF) rule set that blocks XSS payloads targeting WordPress plugin admin endpoints
Implement a strict Content Security Policy that disallows inline scripts on WordPress admin pages
Limit the number of accounts holding administrator or equivalent privileges on the WordPress instance

bash

# Configuration example: Apache header directive to enforce a restrictive CSP
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'"