Elefant CMS Title Persistent cross site scriting

The vulnerability (CVE-2017-20059) is a persistent cross-site scripting (XSS) issue found in Elefant CMS version 1.3.12-RC. The flaw exists in an unknown functionality of the Title Handler component. The manipulation with the input `` leads to basic cross-site scripting. This input, when processed by the application, is not properly sanitized, allowing an attacker to inject arbitrary HTML and JavaScript code that persists within the application [1].

The attack can be launched remotely without special prerequisites. The attacker only needs to provide a crafted title input to the vulnerable component. Since the XSS is persistent, the injected script will be stored and executed in the browsers of other users who view the affected content. No authentication is mentioned as a requirement, implying the vulnerability could be exploited by any user capable of adding or editing content with a title field [1].

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of the victim's browser session. This could lead to session hijacking, defacement, or theft of sensitive information. The vulnerability is classified as problematic with a low severity, but it still poses a risk in multi-user environments where untrusted users can create or modify content titles [1].

The issue is addressed by upgrading to Elefant CMS version 1.3.13. The official recommendation is to apply the update to mitigate the vulnerability. No other workarounds are documented in the provided references. The software is still actively maintained, as seen in the GitHub repository [2].