CVE-2025-14969 is a resource management vulnerability found in the Red Hat build of Quarkus version 3.27.2, specifically within the Hibernate Reactive component. The issue occurs when an HTTP endpoint exposed by the application performs database operations and a remote client prematurely closes the HTTP connection before the operation completes. This premature termination prevents the proper release of database connections back to the connection pool, resulting in leaked connections. Over time, these leaked connections accumulate, exhausting the pool and causing a Denial of Service (DoS) as new database requests cannot be served. The vulnerability requires network access and low privileges but does not require user interaction or authentication beyond what is needed to access the HTTP endpoint. The flaw does not impact confidentiality or integrity but affects availability by potentially disrupting service. No patches or exploit code are currently publicly available, and no known exploits in the wild have been reported. The vulnerability was published on January 26, 2026, with a CVSS v3.1 score of 4.3, indicating medium severity. This issue is particularly relevant for organizations deploying applications using Red Hat's Quarkus build with Hibernate Reactive for reactive database operations, especially in environments with high concurrency or untrusted clients.

The primary impact of CVE-2025-14969 is a Denial of Service (DoS) condition caused by exhaustion of database connections in the connection pool. Organizations relying on Red Hat's Quarkus build with Hibernate Reactive may experience service disruptions or degraded performance when under attack or when clients inadvertently close connections prematurely. This can affect availability of critical applications, especially those with high traffic or those exposed to untrusted or public networks. While confidentiality and integrity are not directly impacted, the inability to process database requests can halt business operations, leading to potential financial losses, reputational damage, and operational downtime. The vulnerability could be exploited by remote attackers with minimal privileges, increasing the risk in multi-tenant or cloud environments. The lack of known exploits reduces immediate risk but does not eliminate the threat, especially as awareness grows.

1. Monitor database connection pool metrics closely to detect abnormal connection usage or leaks. 2. Implement connection timeout and maximum lifetime settings in the connection pool configuration to automatically reclaim leaked connections. 3. Restrict access to HTTP endpoints performing database operations to trusted clients or networks using network segmentation or firewall rules. 4. Employ rate limiting or throttling on HTTP endpoints to reduce the risk of connection exhaustion attacks. 5. Update to patched versions of Red Hat Quarkus build and Hibernate Reactive once available from Red Hat. 6. Conduct thorough testing of application behavior under premature connection closure scenarios to identify and address resource leaks. 7. Consider using circuit breakers or fallback mechanisms in the application to maintain availability during resource exhaustion. 8. Engage with Red Hat support for guidance and early access to fixes or workarounds.