CVE-2025-62953 is a missing authorization vulnerability identified in the nanbu Welcart e-Commerce plugin, affecting versions up to 2.11.24. This vulnerability arises from incorrectly configured access control security levels, allowing attackers with low privileges (PR:L) to bypass authorization checks and perform unauthorized actions. The vulnerability has a CVSS v3.1 base score of 8.8, indicating high severity, with attack vector network (AV:N), low attack complexity (AC:L), privileges required low (PR:L), no user interaction (UI:N), and impacts on confidentiality, integrity, and availability all rated high (C:H/I:H/A:H). This means an attacker who can access the network and has some level of authenticated access can exploit the flaw to fully compromise the system. The missing authorization could allow unauthorized data access, modification of orders, manipulation of product listings, or disruption of service, severely impacting the e-commerce platform's trustworthiness and operational continuity. Although no known exploits are currently reported in the wild, the vulnerability's nature and severity suggest it could be targeted by attackers aiming to steal customer data, commit fraud, or disrupt business operations. The plugin is widely used in WordPress-based e-commerce sites, making it a significant target. The vulnerability was published on October 27, 2025, with no patch links currently available, indicating that organizations must monitor vendor communications closely for updates. The issue is critical because it affects core access control mechanisms, which are fundamental to securing e-commerce platforms.

For European organizations, this vulnerability poses a substantial risk to the confidentiality of customer data, including personal and payment information, potentially leading to data breaches and regulatory non-compliance under GDPR. Integrity of transaction data and product information can be compromised, resulting in financial fraud or reputational damage. Availability impacts could disrupt online sales, causing revenue loss and customer dissatisfaction. Given the high adoption of WordPress and e-commerce solutions in Europe, especially in countries with strong digital economies like Germany, France, and the UK, the threat could affect a broad range of businesses from SMEs to large retailers. The vulnerability's exploitation could also undermine consumer trust in affected platforms, leading to long-term brand damage. Additionally, the potential for unauthorized administrative actions raises concerns about supply chain security and the integrity of the e-commerce ecosystem. The lack of current public exploits provides a window for proactive defense, but the high severity score demands urgent attention.

European organizations using Welcart e-Commerce should immediately audit their installations to identify affected versions (<= 2.11.24). Until an official patch is released, implement strict network segmentation and firewall rules to limit access to administrative interfaces only to trusted IP addresses. Enforce strong authentication mechanisms and monitor logs for unusual access patterns or privilege escalations. Disable or restrict any unnecessary features or endpoints that could be exploited due to missing authorization. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious requests targeting access control bypass attempts. Regularly back up e-commerce data and test restoration procedures to mitigate potential data integrity or availability impacts. Stay informed through vendor advisories and apply patches immediately upon release. Conduct security awareness training for administrators to recognize and respond to potential exploitation attempts. Consider engaging third-party security assessments focused on access control configurations within the e-commerce environment.