CVE-2026-8202: DoS in MongoDB Server 7.0-8.3.2

The primary impact of CVE-2026-8202 is a denial-of-service. A successful exploitation can completely halt MongoDB server operations, preventing legitimate users from accessing data and applications relying on the database. This can lead to significant downtime and disruption of business processes. While the vulnerability requires authentication, the ease of crafting the malicious input makes it a relatively low-effort attack. The blast radius is limited to the affected MongoDB instance, but the impact can be severe if the database is critical to operations. There are no known precedents for this specific exploitation pattern, but similar CPU exhaustion vulnerabilities have historically led to significant service outages.

1. Veröffentlicht2026-05-13

The primary mitigation for CVE-2026-8202 is to upgrade MongoDB Server to version 8.3.2 or later. If immediate upgrading is not possible, consider implementing temporary workarounds. Restricting aggregation permissions to only necessary users can limit the attack surface. Monitoring CPU utilization on the MongoDB server is crucial; unusual spikes could indicate exploitation attempts. Web Application Firewalls (WAFs) or proxies might be configured to inspect and block suspicious aggregation queries, although this is complex and may impact legitimate traffic. After upgrading, confirm the fix by attempting to reproduce the vulnerability with the original malicious input; CPU utilization should remain normal.