CVE-2025-32637: WP Donate Plugin Stored XSS Vulnerability

CVE-2025-32637 Overview

CVE-2025-32637 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the WP Donate WordPress plugin developed by ketanajani. The vulnerability stems from improper neutralization of input during web page generation, allowing attackers to inject malicious scripts that are persistently stored and executed when other users view the affected pages.

Stored XSS vulnerabilities are particularly dangerous because the malicious payload is saved on the target server and delivered to every user who accesses the compromised content. In the context of a donation plugin, this could expose sensitive donor information, hijack administrator sessions, or redirect users to malicious sites.

Critical Impact

Attackers can inject persistent malicious scripts that execute in the browsers of users viewing donation pages, potentially compromising administrator accounts and sensitive donor data.

Affected Products

• WP Donate plugin version 2.0 and earlier
• WordPress installations using affected WP Donate versions

Discovery Timeline

• 2025-04-17 - CVE CVE-2025-32637 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-32637

Vulnerability Analysis

This Stored XSS vulnerability (CWE-79) exists within the WP Donate WordPress plugin due to insufficient input validation and output encoding. When user-supplied data is processed by the plugin, it fails to properly sanitize or escape special characters that can be interpreted as executable code by web browsers.

The attack does not require any user interaction beyond viewing the affected page, as the malicious script is stored server-side and automatically rendered when the page loads. Once executed, the injected script runs within the security context of the victim's browser session, inheriting their authentication credentials and permissions.

Root Cause

The root cause of this vulnerability is the improper neutralization of input during web page generation. The WP Donate plugin fails to adequately sanitize user-controlled input before storing it in the database and subsequently fails to properly encode this data when rendering it in HTML output. This allows specially crafted input containing JavaScript or HTML to be preserved and executed as active content rather than being treated as inert text.

Attack Vector

The attack vector for CVE-2025-32637 involves an attacker submitting malicious input through the WP Donate plugin's forms or configuration options. The injected payload is stored in the WordPress database and subsequently rendered without proper encoding when administrators or users view the affected donation pages or administrative interfaces.

The vulnerability mechanism involves insufficient input sanitization in the donation form processing functions. When user input containing script tags or event handlers is submitted, the plugin stores this content directly without escaping HTML special characters. Upon page rendering, the malicious content is output as executable code rather than displayed text. For technical details, refer to the Patchstack security advisory.

Detection Methods for CVE-2025-32637

Indicators of Compromise

• Unexpected JavaScript code or <script> tags in donation form fields or plugin settings
• Unusual outbound network requests originating from donation pages to external domains
• Reports from users experiencing unexpected redirects or pop-ups on donation pages
• Evidence of session token exfiltration attempts in server logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block XSS payloads in form submissions
• Implement Content Security Policy (CSP) headers to restrict script execution sources
• Monitor WordPress database tables associated with the WP Donate plugin for suspicious HTML or JavaScript content
• Enable browser-based XSS protection headers and review CSP violation reports

Monitoring Recommendations

• Regularly audit plugin database entries for embedded script tags or HTML event handlers
• Configure security monitoring to alert on changes to donation page content
• Review server access logs for suspicious POST requests to donation form endpoints
• Implement file integrity monitoring for WP Donate plugin files

How to Mitigate CVE-2025-32637

Immediate Actions Required

• Review all existing donation form entries and plugin settings for injected malicious content
• Implement Web Application Firewall rules to filter XSS payloads targeting the donation plugin
• Consider temporarily disabling the WP Donate plugin until a patched version is available
• Audit administrator accounts for signs of compromise and reset credentials if suspicious activity is detected

Patch Information

This vulnerability affects WP Donate versions through 2.0. Check the Patchstack vulnerability database for updated patch information and remediation guidance from the plugin developer.

Workarounds

• Implement strict Content Security Policy headers to prevent inline script execution
• Use WordPress security plugins that provide XSS filtering capabilities
• Restrict plugin administrative access to trusted users only
• Apply input validation and output encoding at the theme or server level where possible

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