CVE-2025-54264 is a stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting Adobe Commerce versions 2.4.4-p15 through 2.4.9-alpha2 and earlier. The vulnerability arises from insufficient sanitization of user input in certain form fields, allowing a high-privileged attacker to inject persistent malicious JavaScript code. When other users visit the affected pages containing these fields, the injected scripts execute in their browsers, potentially enabling session hijacking, credential theft, or unauthorized actions within the victim's session. The attack vector is network-based with low complexity, requiring the attacker to have high privileges within the Adobe Commerce environment to inject the payload. However, exploitation requires user interaction, as victims must navigate to the compromised page. The vulnerability changes the scope because the attacker’s actions can affect other users’ sessions and data confidentiality and integrity. The CVSS 3.1 base score of 8.1 reflects these factors, indicating a high-severity issue. No public exploits have been reported yet, but the risk remains significant due to the widespread use of Adobe Commerce in e-commerce platforms globally. The vulnerability highlights the importance of secure coding practices, particularly input validation and output encoding, to prevent script injection. Since Adobe Commerce is a critical platform for many online retailers, exploitation could disrupt business operations and damage customer trust.

For European organizations, this vulnerability poses a significant risk to e-commerce platforms running Adobe Commerce. Successful exploitation can lead to session hijacking, allowing attackers to impersonate legitimate users, including administrators, potentially leading to unauthorized access to sensitive customer data, order manipulation, and fraudulent transactions. The confidentiality and integrity of customer and business data are at high risk, which could result in regulatory non-compliance under GDPR due to data breaches. Additionally, compromised user sessions could facilitate further attacks such as privilege escalation or lateral movement within the network. The requirement for user interaction means phishing or social engineering could be used to lure victims to malicious pages, increasing the attack surface. Given the critical role of e-commerce in European economies, such disruptions could lead to financial losses, reputational damage, and erosion of consumer trust. The absence of known exploits in the wild currently provides a window for proactive mitigation, but the high CVSS score underscores the urgency for remediation.

European organizations should immediately assess their Adobe Commerce installations and prioritize upgrading to patched versions once available. In the absence of official patches, implement strict input validation and sanitization on all user-supplied data in form fields to prevent script injection. Deploy Content Security Policies (CSP) to restrict the execution of unauthorized scripts and reduce the impact of potential XSS payloads. Enable HTTP-only and secure flags on session cookies to mitigate session hijacking risks. Conduct thorough code reviews and penetration testing focused on XSS vectors within the commerce platform. Educate users and administrators about the risks of phishing and social engineering attacks that could facilitate exploitation. Monitor web application logs for unusual input patterns or error messages indicative of attempted exploitation. Consider deploying Web Application Firewalls (WAFs) with rules tailored to detect and block XSS attacks targeting Adobe Commerce. Finally, maintain an incident response plan to quickly address any detected exploitation attempts.