CVE-2026-5209

Vulnerability

Overview

The SourceCodester Leave Application System 1.0 contains a cross-site scripting (XSS) vulnerability in the User Management Handler component. The issue is classified as having low severity (CVSS v3 base score: 2.4) and has been publicly disclosed [1]. The root cause involves insufficient neutralization of user-supplied input, enabling an attacker to inject arbitrary web scripts or HTML.

Exploitation

Prerequisites

Exploitation can be carried out remotely without authentication. An attacker can craft a malicious link containing the XSS payload and deliver it to a target user via social engineering or other means. If the target user clicks the link while logged into the application, the script executes in the context of their session [1].

Potential

Impact

Successful exploitation allows the attacker to execute arbitrary JavaScript in the victim's browser. This could lead to session hijacking, defacement, or redirection to malicious sites. Due to the low severity rating, the attack requires user interaction and may have limited impact on the overall system [1].

Mitigation

Status

No patch or vendor advisory is available as of the publication date. Administrators should restrict access to the affected component, sanitize input, and consider implementing a web application firewall (WAF) until a fix is released [1].