CVE-2025-62971 identifies a stored cross-site scripting (XSS) vulnerability in the CrestaProject Attesa Extra software, specifically in versions up to and including 1.4.5. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing attackers to inject malicious scripts that are stored on the server and later executed in the browsers of users who access the affected pages. This type of vulnerability can lead to session hijacking, credential theft, defacement, or redirection to malicious sites. The CVSS 3.1 score of 6.5 reflects a medium severity, with an attack vector of network (AV:N), low attack complexity (AC:L), requiring privileges (PR:L) and user interaction (UI:R). The scope is changed (S:C), indicating that the vulnerability can affect resources beyond the initially vulnerable component. Confidentiality, integrity, and availability impacts are all rated low but present. No known exploits are currently reported in the wild, but the vulnerability is publicly disclosed and should be considered a credible risk. The lack of available patches at the time of disclosure necessitates immediate mitigation through alternative controls. Stored XSS vulnerabilities are particularly dangerous because the malicious payload persists on the server, affecting multiple users over time. This vulnerability affects web applications that rely on Attesa Extra for dynamic content generation, making it a concern for organizations using this product in their web infrastructure.

For European organizations, the stored XSS vulnerability in Attesa Extra could lead to unauthorized access to user sessions, theft of sensitive information, and potential compromise of internal systems if attackers leverage the vulnerability to escalate privileges or pivot within networks. The impact is magnified in sectors such as finance, healthcare, and government, where data confidentiality and integrity are paramount. Attackers could exploit this vulnerability to conduct phishing campaigns, spread malware, or disrupt services, leading to reputational damage and regulatory penalties under GDPR. The requirement for low privileges and user interaction means that insider threats or targeted spear-phishing could facilitate exploitation. Additionally, the scope change in the vulnerability suggests that the impact could extend beyond the immediate application, potentially affecting integrated systems or services. Organizations relying on Attesa Extra for customer-facing portals or internal dashboards are particularly at risk, as attackers could manipulate web content to deceive users or gain unauthorized access.

Organizations should prioritize applying official patches from CrestaProject as soon as they become available. In the interim, implement strict input validation on all user-supplied data to ensure that scripts or HTML tags are sanitized before storage or rendering. Employ output encoding techniques to neutralize any potentially malicious content when generating web pages. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the risk of XSS exploitation. Conduct regular security audits and penetration testing focused on web application vulnerabilities, including XSS. Educate users about the risks of interacting with suspicious links or content, especially in environments where the vulnerability exists. Consider implementing Web Application Firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting Attesa Extra. Monitor logs for unusual activity indicative of exploitation attempts. Finally, segment networks to limit the potential lateral movement of attackers who might exploit this vulnerability.