What’s Vulnerable › Vulnerabilities
CVE-2026-13074: Awaitable Hello Command in Exhaust Mode Unthrottled Response Loop Leading to Denial of Service
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-22 · updated 2026-10-24
- Weakness: CWE-770
Description
An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific combination of parameters to the awaitable hello command in exhaust mode. The server's handling of this combination results in a response loop that bypasses normal throttling, allowing a small number of connections to degrade server availability.
Affected products
- MongoDB: from 7.0.0 before 7.0.39; from 8.0.0 before 8.0.28; from 8.2.0 before 8.2.12; from 8.3.0 before 8.3.7 — fixed in 7.0.39, 8.0.28, 8.2.12, 8.3.7
How to fix
Upgrade to a fixed version: MongoDB 7.0.39, 8.0.28, 8.2.12, 8.3.7. Check the vendor advisory for mitigations.
References
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