CVE-2026-82076 Integer Overflow in Query Planner Leads to Unbounded Memory Allocation and Denial of Service in MongoDB Server
An authenticated user can trigger an integer overflow in the query planner, causing unbounded memory allocation and server termination.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-82076?
CVE-2026-82076 is a high-severity vulnerability in Mongodb Mongodb, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An integer overflow in the query planning component of MongoDB Server can allow an authenticated user with ordinary database-level read/write privileges to bypass an internal resource limit. Submitting a specially crafted query causes the server to consume memory without bound during query planning, and the resulting exhaustion terminates the server process. This may result in a denial of service affecting all databases served by the affected node.
Weakness: CWE-190
Which versions are affected by CVE-2026-82076?
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, 8.2.13, 8.3.9, 9.0.2 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-82076?
Upgrade mongodb to a fixed version for your release line: 7.0.41, 8.0.30, 8.2.13 or 8.3.9.
Is CVE-2026-82076 being exploited?
There is no known exploitation of CVE-2026-82076 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-2026-82076, GHSA-mjhc-cf7c-4m5x, MINI-2538-h49q-vcqf, MINI-4rmg-5766-vmj5, MINI-wv2q-8rxw-cgwh, MINI-xw47-xmr4-wrw5 and 1 more.