CVE-2025-59565

6.5 MEDIUM

📋 TL;DR

This stored cross-site scripting (XSS) vulnerability in the WP Swings Upsell Order Bump Offer for WooCommerce plugin allows attackers to inject malicious scripts into web pages. When users view affected pages, the scripts execute in their browsers, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using vulnerable versions of this plugin are affected.

💻 Affected Systems

Products:
  • WP Swings Upsell Order Bump Offer for WooCommerce
Versions: n/a through 3.0.7
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress with WooCommerce installed. The vulnerability exists in the plugin's input handling during web page generation.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal administrator session cookies, take over WordPress sites, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise and data theft.

🟠

Likely Case

Attackers inject malicious JavaScript to steal user session cookies or credentials, perform actions as authenticated users, or redirect users to phishing pages.

🟢

If Mitigated

With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers, preventing execution.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires the ability to inject malicious input that gets stored and later displayed to users. The exact attack vector isn't specified in the CVE description.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version after 3.0.7

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/upsell-order-bump-offer-for-woocommerce/vulnerability/wordpress-upsell-order-bump-offer-for-woocommerce-plugin-3-0-7-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Upsell Order Bump Offer for WooCommerce'. 4. Click 'Update Now' if update is available. 5. Alternatively, download latest version from WordPress repository and upload manually.

🔧 Temporary Workarounds

Disable vulnerable plugin

all

Temporarily disable the plugin until patched version is available

wp plugin deactivate upsell-order-bump-offer-for-woocommerce

Implement Content Security Policy

all

Add CSP headers to restrict script execution sources

Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";

🧯 If You Can't Patch

  • Disable the Upsell Order Bump Offer for WooCommerce plugin immediately
  • Implement web application firewall (WAF) rules to block XSS payloads

🔍 How to Verify

Check if Vulnerable:

Check plugin version in WordPress admin under Plugins > Installed Plugins

Check Version:

wp plugin get upsell-order-bump-offer-for-woocommerce --field=version

Verify Fix Applied:

Verify plugin version is 3.0.8 or higher after update

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to plugin endpoints with script tags or JavaScript payloads
  • Multiple failed attempts to access plugin admin functions

Network Indicators:

  • HTTP requests containing <script> tags or JavaScript code in parameters
  • Unexpected redirects from WooCommerce checkout pages

SIEM Query:

source="web_access_logs" AND (uri="*upsell-order-bump*" OR uri="*woocommerce*" OR uri="*checkout*") AND (http_method="POST" OR http_method="PUT") AND (content="*<script>*" OR content="*javascript:*" OR content="*onload=*" OR content="*onerror=*")

🔗 References

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