CVE-2026-82064 Denial of service in MongoDB Server
Unauthenticated attackers can crash MongoDB replica set members by triggering an assertion failure in read concern processing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-82064?
CVE-2026-82064 is a high-severity denial of service vulnerability in Mongodb Mongodb, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security issue in MongoDB Server allows an unauthenticated network user to cause a denial of service on a specific type of replica set member. The server contains an assertion in its read concern processing logic that can be reached without authentication, and the assertion's assumptions about internal state do not hold for all member configurations, causing the server process to terminate.
Weakness: CWE-617
Which versions are affected by CVE-2026-82064?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 7.0.0 | 7.0.41, 8.0.30, 8.3.9 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-82064?
Upgrade mongodb to a fixed version for your release line: 7.0.41, 8.0.30 or 8.3.9.
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-2026-82064 being exploited?
There is no known exploitation of CVE-2026-82064 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-2026-82064, GHSA-9hcc-jgqh-2rwq, MINI-29wh-f62c-m569, MINI-c4xx-77x4-q32x, MINI-g8jp-rgh9-73gf, UBUNTU-CVE-2026-82064.