CVE-2025-62395 is a security vulnerability classified as improper access control within a cohort search web service component. The flaw allows users who have permissions limited to lower security contexts to bypass intended access restrictions and retrieve cohort information from the system context, which is normally reserved for administrative or highly privileged users. This results in unauthorized disclosure of sensitive administrative data. The vulnerability affects multiple versions of the software, specifically 4.1.0, 4.4.0, 4.5.0, and 5.0.0. According to the CVSS v3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N), the attack can be performed remotely over the network with low attack complexity, requiring privileges at a lower context level but no user interaction. The impact is limited to confidentiality, with no integrity or availability consequences. No known exploits have been reported in the wild, but the vulnerability poses a risk of sensitive data leakage if exploited. The root cause is insufficient enforcement of access control policies in the web service, allowing privilege escalation in data access boundaries. The vulnerability was reserved and published in October 2025 by the Fedora assigner. No patches or mitigation links are currently provided, indicating the need for immediate attention by affected organizations.

The primary impact of CVE-2025-62395 is unauthorized disclosure of sensitive administrative cohort data, which could lead to information leakage and potential reconnaissance by attackers. While the vulnerability does not affect data integrity or system availability, the exposure of restricted administrative information can aid attackers in planning further attacks or gaining deeper system insights. Organizations relying on the affected software versions may face compliance and privacy risks if sensitive data is accessed by unauthorized users. The requirement of lower-level privileges to exploit the vulnerability means that insider threats or compromised accounts with limited access could escalate their visibility into sensitive data. Although no active exploitation is currently known, the vulnerability could be targeted in the future, especially in environments where cohort data is critical to operations or contains personally identifiable information (PII). The medium CVSS score reflects moderate risk, but the impact could be significant depending on the sensitivity of the exposed data and the organization's security posture.

1. Immediate mitigation involves restricting access to the cohort search web service to only trusted and necessary users, minimizing the number of accounts with any level of permission in the affected contexts. 2. Implement strict role-based access control (RBAC) policies and validate that access checks are enforced correctly at all context levels within the web service. 3. Monitor and audit access logs for unusual or unauthorized attempts to query cohort information, focusing on users with lower-level permissions. 4. If available, apply vendor patches or updates addressing this vulnerability as soon as they are released. 5. Employ network segmentation and firewall rules to limit exposure of the vulnerable service to only essential internal or external networks. 6. Conduct a thorough review of the web service's access control mechanisms and perform penetration testing to identify and remediate similar access control weaknesses. 7. Educate administrators and users about the risk of privilege escalation and enforce strong authentication and account management practices to reduce the risk of compromised lower-privilege accounts.