CVE-2026-1750 is a privilege escalation vulnerability identified in the Ecwid by Lightspeed Ecommerce Shopping Cart plugin for WordPress, affecting all versions up to and including 7.0.7. The root cause is a missing capability check within the 'save_custom_user_profile_fields' function, which is responsible for handling user profile updates. This flaw allows authenticated users with minimal permissions, such as subscribers, to manipulate the 'ec_store_admin_access' parameter during profile updates. By doing so, an attacker can elevate their privileges to that of a store manager, gaining administrative control over the ecommerce store. This elevation bypasses intended access controls, violating the principle of least privilege. The vulnerability is remotely exploitable over the network without requiring user interaction, and only low-level authentication is necessary, making exploitation relatively straightforward. The CVSS v3.1 score of 8.8 reflects the high impact on confidentiality, integrity, and availability, as attackers can access sensitive customer and transactional data, modify store settings, or disrupt operations. No public exploits have been reported yet, but the vulnerability's nature and ease of exploitation make it a significant threat. The plugin is widely used in WordPress ecommerce deployments, increasing the potential attack surface. The vulnerability is categorized under CWE-269 (Improper Privilege Management), emphasizing the failure to enforce proper access controls during user profile modifications.

For European organizations, this vulnerability poses a significant risk to ecommerce platforms relying on the Ecwid plugin. Successful exploitation can lead to unauthorized administrative access, allowing attackers to manipulate product listings, pricing, customer data, and order processing. This can result in financial losses, reputational damage, and regulatory non-compliance, particularly under GDPR due to potential exposure of personal data. The integrity of ecommerce transactions can be compromised, leading to fraudulent orders or data tampering. Availability may also be affected if attackers disrupt store operations or delete critical data. Given the widespread use of WordPress and Ecwid in Europe, especially in countries with mature ecommerce markets like Germany, the UK, France, and the Netherlands, the impact could be substantial. Organizations in sectors such as retail, manufacturing, and services that depend on online sales are particularly vulnerable. Additionally, the ease of exploitation and lack of required user interaction increase the likelihood of automated attacks targeting vulnerable sites across Europe.

1. Immediate upgrade to the latest patched version of the Ecwid plugin once available; monitor vendor announcements for updates. 2. Until patches are released, restrict user roles and permissions rigorously, ensuring that only trusted users have profile update capabilities. 3. Implement Web Application Firewalls (WAFs) with custom rules to detect and block requests containing the 'ec_store_admin_access' parameter from low-privilege accounts. 4. Conduct regular audits of user roles and permissions within WordPress to detect unauthorized privilege escalations. 5. Enable detailed logging and monitoring of profile update activities to identify suspicious behavior promptly. 6. Employ multi-factor authentication (MFA) for all administrative accounts to reduce the risk of compromised credentials being exploited. 7. Educate site administrators about the vulnerability and encourage immediate action to prevent exploitation. 8. Consider isolating the ecommerce environment or using containerization to limit the blast radius of a potential compromise. 9. Review and harden WordPress security configurations, including disabling unnecessary plugins and enforcing the principle of least privilege across all user roles.