CVE-2025-54667 is a Time-of-check Time-of-use (TOCTOU) race condition vulnerability identified in the myCred plugin developed by Saad Iqbal, affecting versions up to 2.9.4.3. TOCTOU vulnerabilities occur when a system checks a condition (time-of-check) and then uses the result of that check later (time-of-use), during which an attacker can alter the system state to exploit the discrepancy. In this case, the vulnerability allows an attacker to leverage the timing gap between the verification and the execution of certain operations within the myCred plugin, potentially manipulating the integrity of the plugin's processes. myCred is a popular points management system used primarily in WordPress environments to manage user credits, rewards, and gamification features. The vulnerability does not impact confidentiality or availability directly but can lead to integrity violations, such as unauthorized modification of user points or rewards. The CVSS 3.1 base score is 5.3 (medium severity), with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and unchanged scope (S:U). This indicates that exploitation can be performed remotely without authentication or user interaction, increasing the risk of automated or large-scale exploitation. However, no known exploits are currently reported in the wild, and no patches have been linked yet, suggesting that mitigation may require vendor updates or manual intervention. The vulnerability is classified under CWE-367, which specifically addresses TOCTOU race conditions, a subtle and often difficult-to-detect class of bugs that can lead to inconsistent or unauthorized state changes in software systems.

For European organizations using WordPress sites with the myCred plugin, this vulnerability poses a risk primarily to data integrity within the points or rewards system. Attackers could manipulate user credit balances, potentially leading to financial discrepancies, loss of trust, or abuse of loyalty programs. While this may not directly compromise sensitive personal data or system availability, the integrity breach could facilitate fraud, unauthorized transactions, or reputational damage. Organizations in sectors relying on gamification or user engagement through points (e.g., e-commerce, education platforms, membership sites) are particularly at risk. Additionally, if the manipulated points can be converted into monetary value or discounts, the financial impact could be significant. The fact that no authentication is required for exploitation increases the threat surface, allowing external attackers to target vulnerable sites directly. Given the widespread use of WordPress across Europe, and the popularity of myCred in managing user incentives, the vulnerability could affect a broad range of organizations, from SMEs to large enterprises. The absence of known exploits suggests a window of opportunity for proactive mitigation before active attacks emerge.

European organizations should immediately audit their WordPress installations to identify the presence and version of the myCred plugin. Until an official patch is released, administrators should consider temporarily disabling the myCred plugin or restricting access to its functionalities to trusted users only. Implementing Web Application Firewall (WAF) rules to detect and block suspicious requests targeting the plugin's endpoints can reduce exploitation risk. Monitoring logs for unusual activity related to user credit modifications is critical for early detection of exploitation attempts. Organizations should also review and tighten permissions and roles associated with the plugin to minimize potential abuse. Coordinating with the plugin vendor or community to obtain timely patches or updates is essential. For long-term mitigation, developers should consider redesigning the affected code paths to eliminate TOCTOU race conditions by employing atomic operations, locking mechanisms, or transaction controls to ensure state consistency. Regular security assessments and code reviews focusing on concurrency issues can prevent similar vulnerabilities in the future.