CVE-2025-6707 is a medium-severity vulnerability classified under CWE-863 (Incorrect Authorization) affecting MongoDB Server versions 5.0 prior to 5.0.31, 6.0 prior to 6.0.24, 7.0 prior to 7.0.21, and 8.0 prior to 8.0.5. The flaw arises when an authenticated user’s request executes with stale privileges after an authorized administrator intentionally changes those privileges. This means that even after privilege revocation or modification by an admin, the system may continue to honor the previous, higher privilege level for certain user requests. The vulnerability requires the attacker to be authenticated with low privileges and does not require user interaction. The CVSS v3.1 score is 4.2 (medium), reflecting a network attack vector with high attack complexity and low privileges required, impacting confidentiality and integrity but not availability. The issue could lead to unauthorized access to data or unauthorized actions within the database, undermining access control mechanisms. No known exploits are currently reported in the wild, and no official patches are linked yet, but affected organizations should prioritize updating to the fixed versions once available. This vulnerability highlights a design or implementation flaw in MongoDB’s authorization enforcement, potentially allowing privilege escalation or unauthorized data access within the database environment.

For European organizations relying on MongoDB Server for critical data storage and processing, this vulnerability poses a risk of unauthorized data exposure or modification due to stale privilege enforcement. Confidentiality and integrity of sensitive information could be compromised, especially in sectors like finance, healthcare, and government where data protection is paramount. The flaw could allow malicious insiders or compromised low-privilege accounts to perform actions beyond their intended scope, potentially leading to data breaches or compliance violations under GDPR. Although availability is not directly impacted, the reputational and regulatory consequences of unauthorized access could be significant. Organizations using affected MongoDB versions in multi-tenant or shared environments face increased risk, as privilege changes intended to restrict access may not be enforced promptly, allowing lateral movement or data leakage. The medium severity suggests the threat is moderate but should not be ignored, especially given MongoDB’s widespread adoption in European enterprises and public sector entities.

1. Monitor MongoDB vendor advisories closely and apply security patches immediately once released for versions 5.0.31, 6.0.24, 7.0.21, and 8.0.5 or later. 2. Implement strict access controls and minimize the number of users with administrative privileges to reduce the risk of privilege mismanagement. 3. Regularly audit user privileges and session states to detect inconsistencies or stale privilege usage. 4. Consider implementing additional application-layer authorization checks to complement MongoDB’s native controls. 5. Use network segmentation and firewall rules to restrict database access only to trusted hosts and services. 6. Employ real-time monitoring and alerting for unusual database activities that could indicate exploitation attempts. 7. Educate administrators and developers about the importance of privilege revocation and session management best practices. 8. Where possible, enforce short session lifetimes or require re-authentication after privilege changes to reduce stale privilege windows. These steps go beyond generic advice by focusing on operational controls and proactive monitoring tailored to the nature of this authorization flaw.