CVE-2025-62971 identifies a stored cross-site scripting (XSS) vulnerability in CrestaProject's Attesa Extra product, affecting versions up to 1.4.5. The vulnerability stems from improper neutralization of input during the generation of web pages, allowing malicious scripts to be stored on the server and later executed in the browsers of users who access the affected pages. Stored XSS is particularly dangerous because the malicious payload persists on the server, increasing the likelihood of exploitation. Attackers can leverage this vulnerability to execute arbitrary JavaScript code, which can lead to session hijacking, theft of sensitive information such as cookies or credentials, defacement, or even the execution of unauthorized actions on behalf of legitimate users. The vulnerability does not require prior authentication, increasing its risk profile. Although no known exploits have been reported in the wild, the presence of this vulnerability in a web-facing application used by organizations poses a significant risk. The lack of a CVSS score means severity must be assessed based on the impact on confidentiality, integrity, and availability, as well as the ease of exploitation and scope. Stored XSS vulnerabilities typically have a high impact on confidentiality and integrity, moderate impact on availability, and are relatively easy to exploit once discovered. The affected product, Attesa Extra, is used in various organizational contexts, potentially including European enterprises. The vulnerability was published on October 27, 2025, with no patch links currently available, indicating that organizations should prioritize monitoring for updates and implement interim mitigations.

For European organizations, this stored XSS vulnerability could lead to significant security breaches including unauthorized access to user sessions, data theft, and manipulation of web application content. The exploitation of this vulnerability could compromise user credentials and sensitive data, leading to privacy violations and regulatory non-compliance under GDPR. Additionally, attackers could use the vulnerability to distribute malware or conduct phishing campaigns targeting employees or customers. The persistence of the malicious script increases the risk of widespread impact across multiple users. Organizations in sectors such as finance, healthcare, and government, which often handle sensitive data and rely on web applications, are particularly at risk. The reputational damage and potential financial losses from exploitation could be substantial. Furthermore, the lack of a patch at the time of disclosure means organizations must rely on other defensive measures to mitigate risk. The threat is heightened in environments where Attesa Extra is integrated into critical workflows or exposed to external users.

Organizations should immediately inventory their use of CrestaProject Attesa Extra and identify affected versions (<=1.4.5). Until an official patch is released, implement strict input validation and output encoding on all user-supplied data to prevent script injection. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Conduct thorough code reviews and penetration testing focused on XSS vulnerabilities within the application. Educate users about the risks of XSS and encourage cautious behavior regarding suspicious links or content. Monitor web application logs for unusual input patterns or error messages indicative of exploitation attempts. Isolate or restrict access to vulnerable instances where feasible, especially from untrusted networks. Once a patch becomes available, prioritize its deployment across all affected systems. Consider employing web application firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting Attesa Extra. Maintain up-to-date backups and incident response plans to quickly recover from potential compromises.