CVE-2025-48009 is a security vulnerability identified in the Drupal Single Content Sync module, specifically affecting versions from 0.0.0 up to but not including 1.4.12. The vulnerability is classified under CWE-862, which corresponds to Missing Authorization. This means that the module fails to properly enforce authorization checks before allowing certain operations, leading to potential functionality misuse. In practical terms, an attacker with at least low-level privileges (PR:L) but no user interaction (UI:N) can exploit this vulnerability remotely (AV:N) to perform unauthorized actions within the Single Content Sync module. The vulnerability does not impact integrity or availability but results in limited confidentiality loss, as indicated by the CVSS vector (C:L/I:N/A:N). The attack complexity is high (AC:H), suggesting that exploitation requires specific conditions or knowledge, reducing the likelihood of widespread exploitation. No known exploits are currently reported in the wild, and no patches are linked yet, indicating that the issue is relatively new or not yet actively exploited. The vulnerability arises because the module does not adequately verify whether a user is authorized to perform certain synchronization operations, potentially allowing misuse of content synchronization features.

For European organizations using Drupal with the Single Content Sync module, this vulnerability poses a risk of unauthorized access to content synchronization functionality. Although the confidentiality impact is low, unauthorized users could potentially access or synchronize content they should not have access to, leading to information disclosure or leakage of sensitive content. This could be particularly concerning for organizations handling regulated or sensitive data, such as government agencies, healthcare providers, or financial institutions. The lack of impact on integrity and availability means that the threat does not directly allow data modification or service disruption. However, unauthorized content synchronization could undermine trust in content accuracy or lead to inadvertent exposure of internal or confidential information. Given the high attack complexity and requirement for at least low privileges, the threat is less severe for organizations with strong access controls but remains a concern where user privilege management is lax or where attackers can gain low-level access through other means.

European organizations should prioritize upgrading the Single Content Sync module to version 1.4.12 or later once available, as this will likely include the necessary authorization checks to remediate the vulnerability. Until a patch is released, organizations should implement strict access controls to limit which users have permissions to use the Single Content Sync functionality, minimizing the risk of misuse. Conducting thorough audits of user roles and permissions related to content synchronization is critical. Additionally, monitoring logs for unusual synchronization activity can help detect potential exploitation attempts. Organizations should also consider isolating the Drupal environment or restricting network access to trusted IPs to reduce exposure. Finally, applying the principle of least privilege and ensuring that users do not have unnecessary permissions will reduce the attack surface related to this vulnerability.