CVE-2025-27267: Random Quotes Plugin XSS Vulnerability

CVE-2025-27267 Overview

A Reflected Cross-Site Scripting (XSS) vulnerability has been identified in the Random Quotes WordPress plugin developed by srcoley. This vulnerability allows attackers to inject malicious scripts through user-supplied input that is not properly sanitized before being rendered in web pages. When a victim clicks a specially crafted link, the injected script executes in the context of their browser session, potentially leading to session hijacking, credential theft, or further attacks against the user.

Critical Impact

This Reflected XSS vulnerability enables attackers to execute arbitrary JavaScript in victims' browsers, potentially compromising WordPress administrator sessions and enabling complete site takeover.

Affected Products

• WordPress Random Quotes plugin version 1.3 and earlier
• All versions from initial release through version 1.3

Discovery Timeline

• 2025-03-26 - CVE-2025-27267 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-27267

Vulnerability Analysis

The vulnerability stems from improper neutralization of user-controlled input during web page generation (CWE-79). The Random Quotes plugin fails to adequately sanitize input parameters before reflecting them back to users in the rendered HTML output. This allows attackers to craft URLs containing malicious JavaScript payloads that execute when victims visit the specially crafted links.

Reflected XSS vulnerabilities in WordPress plugins are particularly dangerous because WordPress administrators often operate with elevated privileges. If an administrator is tricked into clicking a malicious link, the attacker's script runs with full administrative context, enabling actions such as creating rogue admin accounts, installing backdoors, or modifying site content.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding within the Random Quotes plugin. User-supplied data is incorporated into the HTTP response without proper sanitization, allowing HTML and JavaScript code to be injected and executed by the browser. The plugin fails to implement WordPress security best practices such as using esc_html(), esc_attr(), or wp_kses() functions to properly escape output.

Attack Vector

An attacker exploits this vulnerability by constructing a malicious URL containing JavaScript payload in vulnerable parameters. The attacker then distributes this link through phishing emails, social media, or other channels targeting WordPress site administrators or users. When a victim clicks the link, the malicious script executes in their browser session with the same permissions as the authenticated user.

The attack typically follows this pattern:

1. Attacker identifies the vulnerable input parameter in the Random Quotes plugin
2. Attacker crafts a URL with embedded JavaScript payload
3. Attacker delivers the malicious URL to potential victims via social engineering
4. Victim clicks the link while authenticated to the WordPress site
5. Malicious script executes and can steal session cookies, perform actions as the victim, or redirect to phishing pages

For technical details on the vulnerability mechanism, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-27267

Indicators of Compromise

• Unusual URL parameters containing encoded JavaScript or HTML tags in requests to pages using the Random Quotes plugin
• Web server logs showing requests with <script>, javascript:, onerror=, or similar XSS payloads
• Reports of unexpected browser behavior or redirects from users visiting the WordPress site
• Evidence of session cookie exfiltration attempts in network traffic logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common XSS payloads in URL parameters
• Review web server access logs for suspicious requests containing script tags or event handlers
• Deploy browser-based Content Security Policy (CSP) headers to restrict script execution sources
• Monitor for anomalous administrative actions that may indicate compromised sessions

Monitoring Recommendations

• Enable detailed logging for WordPress plugin activity and administrative actions
• Configure security monitoring tools to alert on XSS signature patterns in HTTP requests
• Implement real-time monitoring of authentication events for signs of session hijacking
• Review WordPress user accounts periodically for unauthorized new administrator accounts

How to Mitigate CVE-2025-27267

Immediate Actions Required

• Deactivate and remove the Random Quotes plugin (random-quotes) from all WordPress installations immediately
• Audit WordPress user accounts for any unauthorized administrative users
• Review site content and files for signs of tampering or backdoor installation
• Consider using alternative quote display plugins that are actively maintained and security-audited

Patch Information

As of the last NVD update on 2026-04-15, all versions of the Random Quotes plugin through version 1.3 are affected by this vulnerability. Check the Patchstack Vulnerability Report for updates on patched versions or vendor advisories.

Workarounds

• Implement Content Security Policy (CSP) headers to mitigate XSS impact by restricting inline script execution
• Deploy a Web Application Firewall (WAF) with XSS protection rules enabled
• Restrict access to WordPress admin areas using IP whitelisting or VPN requirements
• Educate administrators about phishing risks and the importance of verifying links before clicking

# WordPress configuration - Add CSP headers via .htaccess
# Add to your WordPress root .htaccess file
<IfModule mod_headers.c>
    Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline';"
    Header set X-XSS-Protection "1; mode=block"
    Header set X-Content-Type-Options "nosniff"
</IfModule>