CVE-2025-27002 Overview
CVE-2025-27002 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting the CountDown With Image or Video Background WordPress plugin developed by LambertGroup. This vulnerability stems 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 craft malicious URLs that, when clicked by authenticated WordPress administrators or users, execute arbitrary JavaScript code in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions on the WordPress site.
Affected Products
- CountDown With Image or Video Background plugin version 1.5 and earlier
- WordPress installations using the countdown-with-background plugin
Discovery Timeline
- 2026-01-08 - CVE CVE-2025-27002 published to NVD
- 2026-01-08 - Last updated in NVD database
Technical Details for CVE-2025-27002
Vulnerability Analysis
This Reflected XSS vulnerability (CWE-79) occurs when the CountDown With Image or Video Background plugin fails to properly sanitize user-controlled input before reflecting it back in HTML responses. In Reflected XSS attacks, the malicious payload is delivered through the URL or form submission and immediately reflected in the server's response without proper encoding or validation.
The attack requires user interaction—specifically, the victim must click a specially crafted malicious link. When successful, the injected script executes with the same privileges as the victim user within the WordPress application context. This can be particularly damaging if the victim is an authenticated administrator, as the attacker could potentially perform administrative actions, modify site content, or extract sensitive information.
Root Cause
The root cause of this vulnerability is insufficient input validation and output encoding within the plugin's codebase. The plugin processes user-supplied parameters without properly sanitizing them for HTML special characters before including them in the page output. This allows attackers to break out of the expected data context and inject executable script tags or event handlers.
Attack Vector
The attack is network-based and requires no prior authentication to the WordPress site. An attacker crafts a malicious URL containing JavaScript payload embedded in vulnerable parameters exposed by the plugin. The attacker then distributes this URL through social engineering techniques such as phishing emails, malicious advertisements, or compromised websites.
When a victim clicks the link, their browser sends the request to the vulnerable WordPress site, which reflects the malicious input back in the response. The victim's browser then executes the injected JavaScript, believing it to be legitimate content from the trusted WordPress site.
For technical details on this vulnerability, refer to the Patchstack Vulnerability Database Entry.
Detection Methods for CVE-2025-27002
Indicators of Compromise
- Unusual URL parameters containing HTML tags or JavaScript code targeting WordPress pages with the countdown plugin
- Web server logs showing requests with encoded script tags (%3Cscript%3E) or event handlers (onerror=, onload=)
- User reports of unexpected browser behavior or pop-ups when visiting specific site pages
Detection Strategies
- Implement Web Application Firewall (WAF) rules to detect and block common XSS payloads in request parameters
- Monitor web server access logs for suspicious URL patterns containing script injection attempts
- Deploy Content Security Policy (CSP) headers to prevent execution of inline scripts
- Use browser-based XSS auditors and security scanning tools to identify reflected content
Monitoring Recommendations
- Enable comprehensive logging for all WordPress plugin-related HTTP requests
- Configure alerting for requests containing common XSS indicators such as <script>, javascript:, or encoded variants
- Regularly review user-agent strings and referrer headers for anomalous patterns indicating social engineering campaigns
How to Mitigate CVE-2025-27002
Immediate Actions Required
- Remove or deactivate the CountDown With Image or Video Background plugin version 1.5 and earlier until a patched version is available
- Review web server logs for evidence of exploitation attempts
- Implement a Web Application Firewall with XSS protection rules
- Notify site administrators about the vulnerability and the risks of clicking untrusted links
Patch Information
No official patch information is currently available for this vulnerability. Site administrators should monitor the Patchstack Vulnerability Database Entry for updates on remediation guidance from the vendor.
Workarounds
- Deactivate the CountDown With Image or Video Background plugin until a security patch is released
- Implement Content Security Policy headers to restrict inline script execution
- Deploy a WAF with XSS filtering capabilities to block malicious requests
- Consider alternative countdown plugins that have been recently audited for security
# WordPress plugin deactivation via WP-CLI
wp plugin deactivate countdown-with-background
# Add Content-Security-Policy header in .htaccess (Apache)
# Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
