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CVE-2025-6025: Unauthenticated Improper Input Validation Vulnerability in WooCommerce Plugin for WordPress

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Overview

The CVE-2025-6025 is a significant cybersecurity vulnerability affecting the Order Tip for WooCommerce plugin for WordPress. This vulnerability, which affects all versions up to, and including, 1.5.4, allows unauthenticated attackers to manipulate the `data-tip` attribute, potentially leading to unauthorized discounts and even free orders. Therefore, it poses a substantial risk to e-commerce sites using this plugin and can result in significant financial loss.

Vulnerability Summary

CVE ID: CVE-2025-6025
Severity: High (7.5 CVSS)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Unauthorized manipulation of order values, potential system compromise, or data leakage

Affected Products

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Product | Affected Versions

Order Tip for WooCommerce Plugin for WordPress | All versions up to and including 1.5.4

How the Exploit Works

The exploit takes advantage of the lack of server-side validation on the `data-tip` attribute. A malicious actor can manipulate the tip amount for an order, applying an excessive or even negative amount. This manipulation can result in unauthorized discounts up to free orders depending on the value submitted by the attacker. Since the vulnerability does not require authentication, it can be exploited by anyone who can interact with the network.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited:

POST /checkout HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"order": {
"items": [...],
"payment": {
"method": "credit_card",
...
},
"tip": {
"data-tip": "-10000"
}
}
}

In this example, the attacker is placing an order and setting a negative tip value (`”data-tip”: “-10000″`). Since there’s no server-side validation, the application subtracts this tip from the total order amount, effectively giving the attacker a large discount on their order.

Mitigation Measures

To mitigate the risk posed by this vulnerability, users of the affected plugin are advised to apply the vendor patch as soon as it becomes available. In the meantime, the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) could serve as a temporary mitigation strategy, providing an additional layer of security against potential exploitation.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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