xujiangfei admintwo updateSet cross site scripting

Successful exploitation of CVE-2025-3251 allows an attacker to inject arbitrary JavaScript code into the web application. This can lead to a variety of malicious outcomes, including stealing user session cookies, redirecting users to phishing sites, or defacing the website. The remote nature of the vulnerability means an attacker does not need to be on the same network as the target system. The impact is amplified if the application handles sensitive user data or performs critical operations, as an attacker could potentially gain unauthorized access and control.

Admintwo installations running version 1.0 are directly at risk. Shared hosting environments that utilize admintwo are particularly vulnerable, as a compromise of one user's installation could potentially impact other users on the same server. Organizations relying on admintwo for critical functions should prioritize patching.

• php / web:

curl -I 'http://your-admintwo-site.com/user/updateSet?motto=<script>alert("XSS")</script>' | grep HTTP/1.1

• generic web:

curl -s 'http://your-admintwo-site.com/user/updateSet?motto=<script>alert("XSS")</script>' | grep alert

1. 2025-04-04Disclosure

   disclosure

1. Reserviert2025-04-04
2. Veröffentlicht2025-04-04
3. EPSS aktualisiert2026-03-23

The primary mitigation for CVE-2025-3251 is to upgrade to admintwo version 1.0.1, which contains the fix. If upgrading immediately is not possible, consider implementing input validation and sanitization on the 'motto' parameter to prevent malicious code injection. Web application firewalls (WAFs) configured to detect and block XSS attacks can also provide a temporary layer of protection. After upgrading, confirm the vulnerability is resolved by attempting to inject a simple script via the 'motto' parameter and verifying that it is not executed.