CVE-2023-49487

Vulnerability

Overview

CVE-2023-49487 describes a stored cross-site scripting (XSS) vulnerability in JFinalCMS v5.0.0. The flaw resides in the navigation management department, where user-supplied input is not properly sanitized before being stored and later rendered in the application's admin interface [1][3].

Exploitation

An attacker with access to the navigation management functionality can inject malicious JavaScript payloads into fields such as navigation names or URLs. Because the input is stored server-side without adequate encoding, the payload will execute in the browsers of any administrative user who views the affected navigation management pages [2][3]. The attack requires authenticated access to the CMS backend, but no special privileges beyond the ability to edit navigation items.

Impact

A successful exploit allows arbitrary JavaScript execution in the context of the victim's session. This can lead to session hijacking, credential theft, or further administrative actions being performed on behalf of the victim, compromising the integrity and confidentiality of the CMS instance [2][3].

Mitigation

As of the publication date, no official patch has been released for JFinalCMS v5.0.0. Administrators should restrict access to the navigation management interface to trusted users only and consider implementing a web application firewall (WAF) to filter XSS payloads. The vendor repository (jfinal) shows the project is active, but no fix for this specific CMS version is mentioned [1][2].