CVE-2025-5103 is a medium-severity SQL Injection vulnerability affecting the Ultimate Gift Cards for WooCommerce plugin for WordPress, versions up to and including 3.1.4. The vulnerability arises from improper neutralization of special elements used in SQL commands (CWE-89), specifically in the 'default_price' and 'product_id' parameters. These parameters are insufficiently escaped and the SQL queries are not properly prepared, allowing an attacker with Administrator-level privileges or higher to inject boolean-based SQL payloads. This injection enables the attacker to append additional SQL queries to existing ones, potentially extracting sensitive information from the underlying database. The vulnerability requires no user interaction but does require high privileges (administrator or above) to exploit. The CVSS v3.1 score is 4.9 (medium), with the vector indicating network attack vector, low attack complexity, high privileges required, no user interaction, unchanged scope, and high impact on confidentiality but no impact on integrity or availability. No known exploits have been reported in the wild as of the publication date (June 3, 2025). The lack of patches at the time of reporting suggests that organizations using this plugin should prioritize mitigation steps. The vulnerability is significant because WooCommerce is a widely used e-commerce platform, and gift card plugins often handle sensitive transactional data. An attacker exploiting this flaw could extract confidential customer or business data from the database, potentially leading to data breaches or compliance violations.

For European organizations using WordPress with the Ultimate Gift Cards for WooCommerce plugin, this vulnerability poses a risk of unauthorized data disclosure. Since exploitation requires administrator-level access, the threat is primarily from insider threats or attackers who have already compromised administrative credentials. Successful exploitation could lead to exposure of sensitive customer data, including gift card balances, user information, or transactional records, which could violate GDPR and other data protection regulations. This could result in reputational damage, regulatory fines, and loss of customer trust. Additionally, the breach of e-commerce data could facilitate further fraud or financial loss. Given the widespread adoption of WooCommerce in Europe, especially among small and medium-sized enterprises (SMEs) running online stores, the vulnerability could impact a significant number of organizations if not addressed promptly. The medium severity rating reflects the requirement for high privileges, but the potential confidentiality impact remains substantial.

1. Immediate mitigation should include restricting administrator access to trusted personnel only and enforcing strong authentication mechanisms such as multi-factor authentication (MFA) to reduce the risk of credential compromise. 2. Organizations should monitor administrative activity logs for suspicious behavior indicative of exploitation attempts. 3. Until an official patch is released, consider disabling or removing the Ultimate Gift Cards for WooCommerce plugin if it is not critical to business operations. 4. If the plugin is essential, implement web application firewall (WAF) rules to detect and block SQL injection patterns targeting the 'default_price' and 'product_id' parameters. 5. Regularly update WordPress core, plugins, and themes to the latest versions once the vendor releases a patch addressing this vulnerability. 6. Conduct database access audits and ensure that database users have the minimum necessary privileges to limit the impact of potential injections. 7. Educate administrators on the risks of SQL injection and the importance of safeguarding credentials. 8. Perform vulnerability scanning and penetration testing focused on SQL injection vectors to identify any residual risks.