CVE-2025-61876 is an Insecure Direct Object Reference (IDOR) vulnerability identified in the Inforcer Platform version 2.0.153, specifically within the /tenants/{id} API endpoint. IDOR vulnerabilities occur when an application exposes references to internal objects, such as database records or files, without proper authorization checks. In this case, an authenticated user with minimal privileges can manipulate the tenant ID parameter in the API request URL to access information belonging to other tenants. This flaw indicates insufficient access control validation on the server side, allowing unauthorized enumeration and retrieval of sensitive tenant data. The vulnerability does not require elevated privileges beyond authentication, making it easier for low-privileged users to exploit. Although no public exploits are currently documented, the nature of the vulnerability suggests that attackers could systematically enumerate tenant IDs to harvest confidential information. The absence of a CVSS score means severity must be assessed based on impact and exploitability factors. The vulnerability primarily compromises confidentiality by exposing tenant data across client boundaries, potentially violating data protection regulations such as GDPR. The lack of patch links suggests that a fix may not yet be available, emphasizing the need for immediate mitigation through compensating controls. This vulnerability highlights the critical importance of robust authorization checks in multi-tenant environments to prevent cross-tenant data leakage.

For European organizations, the impact of CVE-2025-61876 can be significant, especially for those operating in regulated industries such as finance, healthcare, or government services where tenant data confidentiality is paramount. Unauthorized access to tenant information could lead to data breaches, loss of customer trust, and regulatory penalties under GDPR and other privacy laws. The vulnerability undermines the integrity of tenant isolation in multi-tenant deployments, potentially allowing attackers to gather sensitive business intelligence or personally identifiable information (PII). This could facilitate further targeted attacks, fraud, or competitive disadvantage. Additionally, organizations may face legal and reputational consequences if tenant data is exposed. The ease of exploitation by any authenticated user increases the risk, as insider threats or compromised low-privilege accounts could be leveraged. The lack of known exploits in the wild currently limits immediate widespread impact but does not reduce the urgency for remediation. Overall, the vulnerability poses a high risk to confidentiality and privacy, with moderate impact on integrity and availability.

To mitigate CVE-2025-61876, European organizations should implement the following specific measures: 1) Immediately audit and restrict access controls on the /tenants/{id} API endpoint to ensure that users can only access tenant data associated with their own account or permissions. 2) Employ strict server-side authorization checks that validate the tenant ID against the authenticated user's privileges before returning any data. 3) Implement rate limiting and monitoring on API requests to detect and prevent enumeration attempts of tenant IDs. 4) Conduct a thorough review of multi-tenant access control mechanisms across the Inforcer Platform to identify and remediate similar IDOR vulnerabilities. 5) If a patch becomes available, prioritize its deployment in all affected environments. 6) Use API gateways or web application firewalls (WAFs) with custom rules to block unauthorized access patterns temporarily. 7) Educate developers and security teams on secure coding practices related to object references and authorization. 8) Perform penetration testing focused on IDOR and access control weaknesses to validate the effectiveness of mitigations. These steps go beyond generic advice by focusing on access validation, monitoring, and proactive testing tailored to the specific vulnerability context.