CVE-2025-32959 is a vulnerability identified in the CUBA Platform, a high-level framework widely used for enterprise application development. The issue specifically affects versions prior to 7.2.23 in the local file storage implementation. The vulnerability arises from the lack of restrictions on the size of files that can be uploaded to the server. This absence of limits or throttling on resource allocation corresponds to CWE-770, which relates to allocation of resources without proper limits or throttling. An attacker can exploit this vulnerability by uploading excessively large files, which can exhaust the server's disk space. This resource exhaustion leads to the server returning HTTP 500 errors, effectively causing a denial of service (DoS) condition. The vulnerability does not require authentication or user interaction, making it easier for remote attackers to exploit if the upload functionality is exposed. The issue has been addressed in version 7.2.23 of the CUBA Platform, and a workaround is available through the Jmix documentation website. There are currently no known exploits in the wild, and no CVSS score has been assigned to this vulnerability yet. The vulnerability primarily impacts the availability of affected systems by causing service disruption through resource exhaustion, with no direct impact on confidentiality or integrity reported.

For European organizations using the CUBA Platform in versions prior to 7.2.23, this vulnerability poses a significant risk to service availability. Enterprises relying on CUBA for critical business applications may experience downtime or degraded service performance due to denial of service caused by disk space exhaustion. This can disrupt business operations, lead to loss of productivity, and potentially impact customer trust if services become unavailable. The vulnerability could be exploited remotely without authentication, increasing the risk of opportunistic attacks. Organizations in sectors such as finance, manufacturing, and public administration, which often use enterprise frameworks like CUBA, may find their operations particularly vulnerable. While the vulnerability does not directly compromise data confidentiality or integrity, the resulting service outages could indirectly affect business continuity and compliance with service-level agreements (SLAs). Given the lack of known exploits, the immediate risk is moderate; however, the ease of exploitation and potential for widespread impact on availability necessitate prompt remediation.

European organizations should prioritize upgrading all CUBA Platform deployments to version 7.2.23 or later, where the vulnerability is patched. If immediate upgrading is not feasible, organizations should implement the recommended workaround detailed in the Jmix documentation, which likely involves imposing file size limits or throttling upload functionality to prevent resource exhaustion. Additionally, organizations should monitor file upload endpoints for unusual activity, such as abnormally large file uploads or repeated upload attempts, and implement rate limiting or web application firewall (WAF) rules to block or throttle suspicious traffic. Regularly auditing disk space usage and setting alerts for abnormal consumption can provide early warning signs of exploitation attempts. Network segmentation and restricting access to upload interfaces to trusted users or IP ranges can further reduce exposure. Finally, organizations should incorporate this vulnerability into their incident response plans to quickly identify and mitigate potential denial of service incidents.