CVE-2025-56556 is a vulnerability identified in Subrion CMS version 4.2.1 that affects the built-in Run SQL Query feature accessible via the SQL Tool admin panel. The vulnerability allows authenticated users with administrator or moderator roles—who already have access to this feature—to escalate their privileges within the context of the SQL query tool. This means that these users can perform actions beyond their intended scope, potentially manipulating the database in unauthorized ways. The vulnerability is classified under CWE-566, which relates to authorization issues, indicating improper privilege management. The CVSS v3.1 score is 3.8 (low severity), with vector AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N, meaning the attack can be performed remotely over the network, requires low attack complexity, but high privileges, no user interaction, and impacts confidentiality and integrity slightly without affecting availability. No patches or known exploits are currently reported, but the vulnerability is published and should be considered for remediation. The lack of a patch link suggests that a fix may not yet be available, so organizations must rely on access control and monitoring as interim measures.

For European organizations using Subrion CMS 4.2.1, this vulnerability poses a risk of privilege escalation for users who already have elevated roles such as administrators or moderators. While the initial access requires high privileges, the flaw could allow these users to perform unauthorized SQL queries that may lead to unauthorized data access or modification, impacting data confidentiality and integrity. This could be particularly damaging for organizations handling sensitive personal data under GDPR, as unauthorized data manipulation or leakage could lead to compliance violations and reputational damage. Although availability is not impacted, the integrity compromise could affect business operations relying on accurate database information. The risk is mitigated by the requirement for authenticated access, but insider threats or compromised accounts could exploit this vulnerability. The absence of known exploits reduces immediate risk but does not eliminate the potential for future exploitation.

1. Restrict access to the SQL Tool admin panel strictly to trusted administrators and minimize the number of users with access to the Run SQL Query feature. 2. Implement strong authentication and authorization controls, including multi-factor authentication for admin and moderator accounts. 3. Regularly audit user roles and permissions to ensure that only necessary privileges are assigned. 4. Monitor and log all SQL queries executed via the admin panel to detect suspicious or unauthorized activities promptly. 5. Apply vendor patches or updates as soon as they become available to address this vulnerability directly. 6. Consider isolating the CMS environment and database access to reduce the blast radius in case of exploitation. 7. Educate administrators and moderators about the risks of misuse of the SQL query feature and enforce strict operational procedures.