CVE-2025-23814 is a high-severity reflected Cross-site Scripting (XSS) vulnerability affecting the NotFound CRUDLab Like Box product, versions up to 2.0.9. The vulnerability stems from improper neutralization of input during web page generation, classified under CWE-79. Specifically, user-supplied input is not adequately sanitized or encoded before being included in dynamically generated web pages, allowing attackers to inject malicious scripts that execute in the context of the victim's browser. The vulnerability is exploitable remotely over the network without requiring authentication (AV:N/AC:L/PR:N), but does require user interaction (UI:R), such as clicking a crafted link or visiting a malicious URL. The scope is changed (S:C), indicating that exploitation can affect resources beyond the vulnerable component, potentially impacting other parts of the application or user sessions. The impact includes limited confidentiality, integrity, and availability losses (C:L/I:L/A:L), as attackers can steal session tokens, manipulate client-side data, or perform actions on behalf of users. No known public exploits are reported yet, but the vulnerability is publicly disclosed and assigned a CVSS 3.1 score of 7.1, reflecting a high risk. The lack of available patches at the time of disclosure increases the urgency for mitigation. The vulnerability affects CRUDLab Like Box, a web application component used for CRUD operations, which may be integrated into various web platforms. The reflected XSS nature means the attack vector is typically through crafted URLs or input fields that reflect malicious payloads back to users without proper encoding or filtering.

For European organizations, this vulnerability poses significant risks, especially for those using CRUDLab Like Box in their web applications or services. Exploitation could lead to session hijacking, credential theft, or unauthorized actions performed in the context of authenticated users, potentially compromising sensitive business data or user privacy. This is particularly critical for sectors handling personal data under GDPR, such as finance, healthcare, and e-commerce, where data breaches can result in regulatory penalties and reputational damage. Additionally, reflected XSS can be leveraged as a stepping stone for more complex attacks like phishing or malware distribution. The vulnerability's ability to affect multiple users through crafted links increases the risk of widespread impact. Given the cross-site nature, attacks could also facilitate lateral movement within web applications, undermining trust in affected services. The absence of patches means organizations must rely on immediate mitigations to protect their users and infrastructure.

1. Immediate deployment of Web Application Firewalls (WAFs) with custom rules to detect and block typical XSS payloads targeting CRUDLab Like Box endpoints. 2. Implement strict Content Security Policy (CSP) headers to restrict execution of unauthorized scripts and reduce the impact of successful XSS attempts. 3. Conduct thorough input validation and output encoding on all user-supplied data, especially in URL parameters and form inputs reflected in web pages, until official patches are available. 4. Educate users and administrators about the risk of clicking suspicious links and encourage the use of browser security features that can mitigate XSS risks. 5. Monitor web application logs for unusual patterns indicative of attempted XSS exploitation, such as suspicious query strings or repeated access to vulnerable endpoints. 6. Plan and prioritize patching as soon as vendor updates become available, and consider temporary removal or disabling of CRUDLab Like Box components if feasible. 7. Use automated scanning tools to identify instances of CRUDLab Like Box in the environment and assess exposure levels.