A recent vulnerability, dubbed CVE-2025-30798, has been identified in rickonline_nl's Better WishList API software. This vulnerability allows malicious actors to carry out Cross-site Scripting (XSS) attacks by injecting harmful code by exploiting Improper Neutralization of Input During Web Page Generation, also known as 'Reflected XSS'. Affected versions of Better WishList API range from its initial (n/a) release to version 1.1.4.

Background on XSS Vulnerabilities

Cross-site Scripting (XSS) vulnerabilities are a form of attack where malicious scripts are injected into legitimate applications and websites. When exploited, these vulnerabilities can result in an attacker gaining unauthorized access to sensitive data, conducting phishing attacks, or compromising user sessions.

Reflected XSS, as the name suggests, reflects the injected code back to the attacker through HTTP responses, making it possible for the attacker to run malicious JavaScript code in the victim's browser.

Exploit Details

In the case of CVE-2025-30798, attackers can exploit the vulnerability in Better WishList API by sending specially crafted requests to the application in the form of malicious URLs. When a victim clicks on the URL, the harmful JavaScript code embedded in the link executes in the victim's browser, leading to the potential theft of sensitive data or session hijacking.

Here's a sample code snippet illustrating how the vulnerability could be exploited

<a href="https://example.com/betterwishlistapi/?searchparam=<script>malicious_code_here</script>">;
  Click here for your search results
</a>

In this example, the maliciousCodeHere represents the attacker's harmful script. When the user clicks the link, the browser executes the embedded script, giving the attacker whatever control is specified in the malicious_code_here.

Mitigation

Users of Better WishList API are advised to update their software to the latest version to protect against this vulnerability. In addition, consider implementing the following best practices to improve the security of your application:

Use output encoding to encode any user-controlled data being rendered in the application properly.

- Implement Content Security Policy (CSP) headers to restrict the sources from which scripts can be executed.

Original References

For more information on CVE-2025-30798 and recommendations on how to address this vulnerability, please refer to the following resources:

1. CVE-2025-30798 - NIST National Vulnerability Database (NVD)
2. OWASP - Cross-site Scripting (XSS)
3. OWASP - XSS Prevention Cheat Sheet

Conclusion

Rickonline_nl's Better WishList API has been found vulnerable to a Cross-site Scripting (XSS) attack, which affects versions ranging from n/a through 1.1.4. By exploiting this vulnerability, attackers can inject malicious code through specially crafted URLs, leading to potential data theft or unauthorized access to user accounts. Users are urged to update their Better WishList API software to the latest version to mitigate this security risk. Additionally, implementing output encoding, input validation, and Content Security Policy can provide further protection against such attacks.

Timeline

Published on: 04/01/2025 06:15:51 UTC
Last modified on: 04/01/2025 20:26:11 UTC