CVE-2026-2154: XSS in SourceCodester Patients Waiting Area

The XSS vulnerability in SourceCodester Patients Waiting Area Queue Management System allows an attacker to inject arbitrary JavaScript code into the application. This code can then be executed in the context of a user's browser when they visit a vulnerable page. An attacker could leverage this to steal session cookies, redirect users to malicious websites, or deface the application. The public availability of a proof-of-concept significantly lowers the barrier to entry for attackers, increasing the likelihood of exploitation. The impact is amplified if the application is used to handle sensitive patient data, as attackers could potentially gain access to this information.

1. Reserved2026-02-07
2. Published2026-02-08
3. Modified2026-02-23
4. EPSS updated2026-03-23

The primary mitigation for CVE-2026-2154 is to upgrade to a patched version of SourceCodester Patients Waiting Area Queue Management System as soon as it becomes available. Until a patch is released, implement temporary mitigations such as input validation and output encoding on the First Name field in /registration.php. Web application firewalls (WAFs) can be configured to detect and block malicious XSS payloads targeting this vulnerability. Regularly scan the application for XSS vulnerabilities using automated tools.