CVE-2025-52782: Scroll UP Plugin XSS Vulnerability

CVE-2025-52782 Overview

CVE-2025-52782 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting the Scroll UP (scroll-to-up) WordPress plugin developed by King Rayhan. This vulnerability stems from improper neutralization of input during web page generation, allowing attackers to inject malicious scripts that execute in the context of a victim's browser session.

Reflected XSS vulnerabilities occur when user-supplied data is immediately echoed back to the browser without proper sanitization or encoding. In this case, the Scroll UP plugin fails to adequately validate or sanitize input before including it in the generated web page output, enabling attackers to craft malicious URLs that execute arbitrary JavaScript code when clicked by unsuspecting users.

Critical Impact

Attackers can steal session cookies, redirect users to malicious sites, perform actions on behalf of authenticated users, and potentially gain administrative access to WordPress installations.

Affected Products

• WordPress Scroll UP Plugin (scroll-to-up) versions through 2.0
• All WordPress installations using the affected plugin versions

Discovery Timeline

• 2025-06-20 - CVE CVE-2025-52782 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2025-52782

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation), which encompasses all forms of Cross-Site Scripting attacks. The Reflected XSS variant present in this plugin occurs when the application receives data in an HTTP request and includes that data within the immediate response in an unsafe manner.

When a WordPress site uses the vulnerable Scroll UP plugin, user-controlled input is processed without adequate sanitization before being rendered in the HTML output. This allows an attacker to craft a specially designed URL containing JavaScript payloads. When a victim clicks this malicious link, the JavaScript executes within their browser session with full access to the page's DOM and the user's cookies.

The impact of this vulnerability includes:

• Session hijacking through cookie theft
• Credential harvesting via fake login forms
• Defacement of WordPress pages
• Redirection to phishing or malware distribution sites
• Execution of actions with the victim's privileges, including administrative tasks

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding within the Scroll UP plugin. The plugin fails to properly sanitize user-controllable input before incorporating it into the HTML response. WordPress provides built-in functions such as esc_html(), esc_attr(), and wp_kses() for sanitizing output, but these security measures were not adequately implemented in the affected code paths.

Attack Vector

The attack vector for this Reflected XSS vulnerability requires user interaction. An attacker must craft a malicious URL containing the XSS payload and convince a victim to click the link. This is commonly achieved through:

1. Social engineering via phishing emails or messages
2. Embedding malicious links in forums, comments, or social media
3. Exploiting open redirect vulnerabilities to mask the malicious URL
4. Using URL shorteners to obscure the attack payload

Once the victim clicks the malicious link, the payload executes in the context of the vulnerable WordPress site, allowing the attacker to perform any action the victim is authorized to perform.

The vulnerability affects the plugin through version 2.0, and exploitation does not require authentication to the WordPress site, though the impact is amplified when authenticated users, particularly administrators, are targeted.

Detection Methods for CVE-2025-52782

Indicators of Compromise

• Review web server access logs for suspicious requests containing JavaScript payloads or encoded script tags in URL parameters
• Monitor for unusual URL patterns targeting the Scroll UP plugin endpoints with unexpected query string parameters
• Check for reports from users about unexpected redirects, pop-ups, or suspicious behavior after clicking internal links

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common XSS patterns in incoming requests
• Implement Content Security Policy (CSP) headers to mitigate the impact of successful XSS exploitation
• Use browser-based XSS auditor features and security extensions for client-side detection
• Perform regular security scans of WordPress installations using tools like WPScan to identify vulnerable plugins

Monitoring Recommendations

• Enable detailed logging for all HTTP requests to WordPress installations and review for suspicious payloads
• Implement real-time alerting for requests containing common XSS indicators such as <script>, javascript:, and event handlers
• Monitor for unusual JavaScript execution patterns or unexpected external resource loading through CSP violation reports
• Track plugin version inventory across all WordPress installations to ensure vulnerable versions are identified

How to Mitigate CVE-2025-52782

Immediate Actions Required

• Audit your WordPress installation for the presence of the Scroll UP (scroll-to-up) plugin
• If the plugin is installed, immediately update to a patched version if available, or deactivate and remove the plugin
• Review server access logs for evidence of exploitation attempts targeting this vulnerability
• Implement Web Application Firewall rules to block requests containing XSS payloads

Patch Information

No official patch information is currently available from the vendor. Users should consult the Patchstack WordPress Vulnerability Advisory for the latest updates on patch availability and remediation guidance. If no patch is available, consider removing the plugin and using an alternative scroll-to-top solution.

Workarounds

• Deactivate and remove the Scroll UP plugin until an official patch is released
• Implement strict Content Security Policy headers to limit the impact of potential XSS exploitation
• Deploy a Web Application Firewall with rules to filter malicious XSS payloads
• Use WordPress security plugins that provide additional input sanitization and XSS protection
• Consider implementing alternative scroll-to-top functionality using well-maintained and security-audited plugins

# WordPress CLI commands to identify and remove vulnerable plugin
# Check if plugin is installed
wp plugin list --name=scroll-to-up --format=table

# Deactivate the vulnerable plugin
wp plugin deactivate scroll-to-up

# Remove the vulnerable plugin
wp plugin delete scroll-to-up

# Install alternative scroll-to-top plugin (example)
# wp plugin install [alternative-plugin-slug] --activate