CVE-2025-62798 is a Cross-Site Scripting (XSS) vulnerability identified in the code16 sharp content management framework, a Laravel package used for building CMS applications. The vulnerability exists in versions prior to 9.11.1 within the SharpShowTextField component. This component improperly handles user input by evaluating expressions wrapped in {{ & }} using the Vue.js framework. Because Vue evaluates these expressions, an attacker can inject malicious JavaScript or HTML code that executes in the context of the victim's browser when the field is rendered. This improper neutralization of input corresponds to CWE-79. The vulnerability requires the attacker to have at least low privileges (PR:L) and some user interaction (UI:R), such as tricking a user into viewing a crafted page or content field. The CVSS 3.1 base score is 5.4 (medium), reflecting the network attack vector (AV:N), low attack complexity (AC:L), partial confidentiality and integrity impact (C:L/I:L), no availability impact (A:N), and scope change (S:C). The flaw allows attackers to steal sensitive information, manipulate displayed content, or perform actions on behalf of the user within the application context. The issue was fixed in version 9.11.1 by properly sanitizing or disabling the unsafe evaluation of expressions in the SharpShowTextField component. No public exploits have been reported yet, but the vulnerability is significant given the widespread use of Laravel and the sharp package in web applications.

For European organizations, this vulnerability poses a risk primarily to confidentiality and integrity of web applications built using the sharp framework on Laravel. Attackers exploiting this XSS flaw can execute arbitrary scripts in users’ browsers, potentially stealing session tokens, credentials, or performing unauthorized actions on behalf of users. This can lead to data breaches, account compromise, and erosion of user trust. Although availability is not directly impacted, the indirect consequences such as reputational damage and regulatory penalties under GDPR for data exposure can be severe. Organizations that expose administrative or user-facing interfaces using sharp are particularly at risk. The vulnerability’s requirement for low privileges and user interaction means insider threats or social engineering could facilitate exploitation. Given the growing adoption of Laravel-based CMS solutions in Europe, especially in sectors like government, finance, and e-commerce, the impact could be widespread if unpatched.

European organizations should immediately upgrade all instances of the sharp framework to version 9.11.1 or later to remediate this vulnerability. Where immediate patching is not feasible, implement strict Content Security Policies (CSP) to restrict script execution and reduce the impact of injected scripts. Review and sanitize all user-generated content rendered via SharpShowTextField components, avoiding the use of unsafe expression evaluation. Conduct thorough code audits to identify any other instances where Vue expressions might be evaluated unsafely. Educate developers on secure coding practices related to template rendering and input validation in Vue and Laravel environments. Monitor web application logs for unusual input patterns or script injection attempts. Finally, implement multi-factor authentication and session management best practices to limit the impact of any successful XSS exploitation.