CVE-2025-67922: Grand Restaurant Reflected XSS Vulnerability

CVE-2025-67922 Overview

CVE-2025-67922 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting the ThemeGoods Grand Restaurant WordPress theme. This vulnerability arises from improper neutralization of user-supplied input during web page generation, allowing attackers to inject malicious scripts that execute in the context of a victim's browser session.

Critical Impact

Attackers can exploit this vulnerability to steal session cookies, redirect users to malicious websites, or perform actions on behalf of authenticated users visiting WordPress sites running the vulnerable Grand Restaurant theme.

Affected Products

• ThemeGoods Grand Restaurant WordPress Theme versions prior to 7.0.9
• WordPress installations using the vulnerable grandrestaurant theme

Discovery Timeline

• 2026-01-08 - CVE CVE-2025-67922 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2025-67922

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). The Grand Restaurant theme fails to properly sanitize or encode user-controlled input before reflecting it back in the HTML response, enabling reflected XSS attacks.

Reflected XSS vulnerabilities require user interaction to exploit, typically through social engineering techniques where an attacker convinces a victim to click a specially crafted malicious link. Once clicked, the malicious script executes within the victim's authenticated session, potentially compromising the confidentiality and integrity of user data.

The attack is network-accessible without requiring authentication, though it does depend on user interaction. The scope is changed, meaning the vulnerability can affect resources beyond the vulnerable component itself, such as same-origin pages or browser storage.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding within the Grand Restaurant theme's PHP code. User-supplied parameters are reflected in the rendered HTML without proper sanitization, allowing attackers to break out of the intended context and inject arbitrary JavaScript code.

Attack Vector

The attack vector is network-based, requiring an attacker to craft a malicious URL containing JavaScript payload in a vulnerable parameter. When a victim clicks this link while authenticated to the WordPress site, the malicious script executes with the victim's privileges. This can lead to session hijacking, credential theft, or unauthorized actions on the victim's behalf.

The exploitation typically involves:

1. Identifying a vulnerable input parameter in the theme
2. Crafting a URL with embedded JavaScript payload
3. Distributing the malicious link via phishing emails, social media, or other channels
4. Waiting for a victim to click the link while logged into the affected WordPress site

Detection Methods for CVE-2025-67922

Indicators of Compromise

• Suspicious URLs in web server logs containing JavaScript or HTML-encoded characters in query parameters
• Unusual GET/POST requests targeting theme-specific endpoints with script tags or event handlers
• User reports of unexpected redirects or behavior when clicking internal site links
• Browser-based alerts or errors indicating blocked inline script execution (if CSP is enabled)

Detection Strategies

• Review web application firewall (WAF) logs for XSS attack patterns targeting the Grand Restaurant theme
• Monitor for suspicious outbound connections originating from user browser sessions
• Implement Content Security Policy (CSP) headers to detect and block unauthorized inline script execution
• Deploy endpoint detection solutions capable of identifying malicious JavaScript execution patterns

Monitoring Recommendations

• Enable verbose logging for WordPress theme activity and review for anomalous requests
• Configure alerting on web server logs for common XSS payload patterns (<script>, javascript:, onerror=, etc.)
• Monitor authentication events for session anomalies that may indicate session hijacking
• Implement real-time monitoring of client-side JavaScript errors that could indicate exploitation attempts

How to Mitigate CVE-2025-67922

Immediate Actions Required

• Update the Grand Restaurant theme to version 7.0.9 or later immediately
• Implement a Web Application Firewall (WAF) with XSS protection rules as an interim measure
• Enable Content Security Policy (CSP) headers to mitigate the impact of XSS attacks
• Review server logs for evidence of exploitation attempts

Patch Information

ThemeGoods has addressed this vulnerability in Grand Restaurant theme version 7.0.9. Site administrators should update to this version or later through the WordPress admin dashboard or by downloading the patched version from the theme vendor. For detailed patch information, refer to the Patchstack Vulnerability Database Entry.

Workarounds

• Deploy a WAF rule to filter requests containing common XSS payloads targeting theme parameters
• Implement strict Content Security Policy headers that prevent inline script execution
• Consider temporarily disabling the vulnerable theme until the patch can be applied
• Use a security plugin to add input sanitization at the WordPress application level

# Example Content Security Policy header configuration for Apache
# Add to .htaccess or virtual host configuration
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; frame-ancestors 'self';"