CVE-2025-64012 is a security vulnerability identified in the InvoicePlane open-source invoicing application. The vulnerability arises from an Incorrect Access Control issue in the invoices/view handler, where the system fails to verify whether the requesting user owns the invoice before returning the invoice data. This means that an authenticated or potentially unauthenticated user could access invoice details that belong to other users, leading to unauthorized disclosure of sensitive financial information. The specific commit introducing this flaw is debb446c, but affected versions are not explicitly listed, indicating the need for users to review their current InvoicePlane versions against this commit. No CVSS score has been assigned yet, and no public exploits have been reported, but the nature of the flaw suggests a significant risk to confidentiality. The vulnerability impacts the confidentiality and integrity of invoice data, as unauthorized users could view or potentially manipulate invoice information. Since InvoicePlane is often used by small and medium-sized enterprises (SMEs) for managing invoices, this vulnerability could lead to financial data leaks, reputational damage, and compliance issues. The lack of patch links suggests that a fix may not yet be publicly available, requiring organizations to implement manual access control checks or await an official patch. The vulnerability does not require complex exploitation techniques but depends on the ability to access the invoices/view handler, which may require authentication depending on deployment. Overall, this vulnerability highlights the critical need for proper access control validation in financial applications.

For European organizations, the impact of CVE-2025-64012 can be significant, especially for SMEs and businesses relying on InvoicePlane for invoicing and financial management. Unauthorized access to invoice data can lead to exposure of sensitive financial information, including client details, amounts, and transaction histories. This can result in financial fraud, loss of customer trust, and violations of data protection regulations such as GDPR. The breach of confidentiality may also lead to legal and regulatory penalties. Additionally, if attackers manipulate invoice data, it could affect the integrity of financial records, complicating audits and financial reporting. The availability impact is minimal as the vulnerability does not cause service disruption directly. However, the reputational damage and potential financial losses could be substantial. Organizations in sectors with strict compliance requirements, such as finance, healthcare, and legal services, are particularly vulnerable. The absence of known exploits in the wild provides a window for proactive mitigation, but the risk remains high due to the sensitivity of the data involved.

To mitigate CVE-2025-64012, organizations should first identify if they are using affected versions of InvoicePlane, particularly those including the commit debb446c. Until an official patch is released, implement manual access control checks in the invoices/view handler to ensure that invoice data is only returned to the rightful owner. This can be done by verifying the authenticated user's identity against the invoice ownership before serving the data. Conduct a thorough code review of access control logic across the application to identify and fix similar issues. Enable detailed logging and monitoring of invoice access requests to detect unauthorized attempts. Restrict access to the InvoicePlane application to trusted networks or VPNs to reduce exposure. Educate users about the importance of strong authentication and session management. Once a patch is available, apply it promptly and test the fix in a staging environment before production deployment. Additionally, consider implementing multi-factor authentication (MFA) to add an extra layer of security. Regularly audit and update dependencies and third-party components to minimize the attack surface.