CVE-2026-13074 Awaitable Hello Command in Exhaust Mode Unthrottled Response Loop Leading to Denial of Service
Unauthenticated remote attackers can cause excessive CPU consumption and degrade server availability by sending specific parameters to the awaitable hello command in exhaust mode.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-13074?
CVE-2026-13074 is a medium-severity denial of service vulnerability in Mongodb Mongodb, published on 22 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-770
Which versions are affected by CVE-2026-13074?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 7.0.0 | 7.0.39, 8.0.28, 8.2.12, 8.3.7 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-13074?
Upgrade mongodb to a fixed version for your release line: 7.0.39, 8.0.28, 8.2.12 or 8.3.7.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-13074 being exploited?
There is no known exploitation of CVE-2026-13074 in the wild and no public exploit code.
Other vulnerabilities in Mongodb Mongodb
- CVE-2025-14847 MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency
- CVE-2026-82067 Auth bypass in MongoDB Server
- CVE-2026-13072 MongoDB Improper Input Validation in Compute Mode External Data Processing Leading to Memory Corruption
- CVE-2017-15535 Denial of service in n/a
- CVE-2026-18691 Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure
Sources
Also known as BIT-mongodb-2026-13074, GHSA-w3fp-8cx4-8vqp, MINI-95c7-rqvc-f7fp, MINI-pc7c-hqv8-h793, MINI-vhf5-c4m7-hm8w, MINI-xmqw-2wj4-fjmq and 1 more.