CVE-2025-53987 is a vulnerability classified under CWE-201, which involves the insertion of sensitive information into sent data within the Crocoblock JetMenu plugin. JetMenu is a WordPress plugin used to create customizable menus on websites. This vulnerability affects versions up to 2.4.11.1. The issue allows an attacker with at least low-level privileges (PR:L) to retrieve embedded sensitive data that should not be exposed. The vulnerability can be exploited remotely over the network (AV:N) without requiring user interaction (UI:N). The attacker does not need to escalate privileges beyond low-level access, and the scope of the vulnerability is unchanged (S:U), meaning the impact is limited to the affected component. The CVSS v3.1 base score is 6.5, indicating a medium severity. The vulnerability impacts confidentiality (C:H) but does not affect integrity or availability. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability likely arises from the plugin embedding sensitive information in data sent to clients or other systems, which can be intercepted or retrieved by unauthorized parties with some level of access, potentially exposing confidential information such as credentials, tokens, or internal configuration details. This exposure could facilitate further attacks or data breaches if leveraged by malicious actors.

For European organizations using WordPress sites with the Crocoblock JetMenu plugin, this vulnerability poses a risk of sensitive data leakage. The exposure of confidential information could lead to unauthorized access to internal systems, user data compromise, or facilitate lateral movement within networks. Organizations in sectors with strict data protection regulations, such as finance, healthcare, and government, could face compliance violations under GDPR if sensitive personal or organizational data is exposed. The medium severity score reflects a moderate risk, but the confidentiality impact is high, which is critical for organizations handling sensitive or regulated data. Since exploitation requires at least low-level privileges, attackers might leverage compromised user accounts or exploit other vulnerabilities to gain initial access. The lack of user interaction requirement means automated attacks are feasible once access is obtained. The absence of known exploits in the wild provides a window for mitigation before widespread exploitation occurs. However, the potential for data leakage could undermine trust in affected organizations and lead to reputational damage and financial penalties.

European organizations should immediately identify if their WordPress installations use the Crocoblock JetMenu plugin and determine the version in use. Until an official patch is released, organizations should consider the following specific actions: 1) Restrict access to WordPress admin and user accounts to trusted personnel only, enforcing strong authentication mechanisms such as multi-factor authentication (MFA) to reduce the risk of low-privilege account compromise. 2) Review and minimize user privileges to ensure no unnecessary accounts have low-level access that could be exploited. 3) Monitor network traffic and logs for unusual data transmissions that could indicate attempts to retrieve sensitive embedded data. 4) If feasible, temporarily disable or replace the JetMenu plugin with alternative menu solutions that do not exhibit this vulnerability. 5) Implement web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting JetMenu endpoints. 6) Stay informed on vendor advisories and apply patches promptly once available. 7) Conduct security audits and penetration testing focused on WordPress plugins to identify similar vulnerabilities proactively. These targeted measures go beyond generic advice by focusing on access control, monitoring, and plugin management specific to this vulnerability.