CVE-2025-47511 is a path traversal vulnerability (CWE-22) identified in the nanbu Welcart e-Commerce platform, affecting versions up to 2.11.13. Path traversal vulnerabilities occur when an application improperly restricts user-supplied input used to construct file or directory paths, allowing attackers to access files and directories outside the intended restricted directory. In this case, the vulnerability allows an attacker with high privileges (PR:H) to remotely exploit the system over the network (AV:N) without requiring user interaction (UI:N). The vulnerability does not impact confidentiality or integrity but results in a complete loss of availability (A:H) for the affected system, indicating that exploitation could cause denial of service or system crashes. The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The CVSS 3.1 base score is 6.8, categorized as medium severity. No known exploits are currently in the wild, and no patches have been linked yet. Given the nature of Welcart as an e-Commerce platform, this vulnerability could disrupt online retail operations by causing service outages or instability through malicious path traversal attacks, potentially impacting business continuity and customer trust.

For European organizations using Welcart e-Commerce, this vulnerability poses a significant risk to service availability. Disruption of e-Commerce platforms can lead to direct financial losses, damage to brand reputation, and loss of customer confidence. Since the vulnerability requires high privileges, it implies that an attacker would need to compromise or have access to an administrative account or a similarly privileged user, which could happen through other attack vectors such as credential theft or insider threats. The path traversal could be leveraged to manipulate critical files or configurations, potentially leading to system crashes or denial of service. In the context of GDPR and other European data protection regulations, service unavailability may also impact compliance, especially if it affects the ability to provide services or maintain data integrity. Additionally, prolonged downtime during peak shopping periods could have amplified economic consequences for European retailers relying on Welcart.

1. Immediate mitigation should focus on restricting and monitoring access to administrative accounts to prevent attackers from obtaining the high privileges required to exploit this vulnerability. 2. Implement strict input validation and sanitization on all user-supplied path parameters to ensure that directory traversal sequences (e.g., '../') are properly filtered or rejected. 3. Employ web application firewalls (WAFs) with rules specifically designed to detect and block path traversal attempts targeting Welcart endpoints. 4. Conduct thorough code reviews and security testing on the affected versions of Welcart to identify and remediate path traversal flaws. 5. Since no official patches are currently linked, organizations should monitor vendor advisories closely and apply patches as soon as they become available. 6. Isolate the e-Commerce platform within segmented network zones to limit the impact of potential exploitation. 7. Maintain regular backups and disaster recovery plans to quickly restore service availability in case of denial-of-service incidents. 8. Educate privileged users on secure credential management and monitor for suspicious activities that could indicate privilege escalation or misuse.