CVE-2026-82071 Insufficient Validation of Storage Engine Configuration Options in MongoDB Server Leads to Out-of-Bounds Write
An authenticated user with write privileges can trigger an out-of-bounds write via crafted collection parameters, causing server crashes or potential code execution.
- 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-2026-82071?
CVE-2026-82071 is a high-severity memory corruption 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
Insufficient validation of storage engine configuration options in MongoDB Server allows an authenticated user with write privileges to supply crafted parameters during collection creation that override internal storage metadata. This results in an out-of-bounds memory write in the server process, causing a denial of service via server crash, with potential for further impact including arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2026-82071?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 8.3.0 | 8.3.9 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-82071?
Upgrade mongodb to 8.3.9 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-82071 being exploited?
There is no known exploitation of CVE-2026-82071 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-2026-82071, GHSA-3566-g77x-4r27, MINI-hpf2-9254-m7fr, UBUNTU-CVE-2026-82071.