CVE-2026-82055 Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial of Service
An authenticated user can cause a denial of service in MongoDB Server by inserting a crafted GeoJSON document into a collection with a 2dsphere index.
- 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-2026-82055?
CVE-2026-82055 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
A security issue exists in MongoDB's 2dsphere index key generation that can cause a server crash due to a null pointer dereference. When a specially crafted GeoJSON document is inserted into a collection with a 2dsphere index, an inconsistency in geometry parsing can leave an internal object in an invalid, partially initialized state. During subsequent index key generation, access to this improperly initialized object results in a null pointer dereference that terminates the mongod process. An authenticated user with write access can use this to cause a denial of service.
Weakness: CWE-476
Which versions are affected by CVE-2026-82055?
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-2026-82055?
Upgrade mongodb to 8.3.9 or later.
Is CVE-2026-82055 being exploited?
There is no known exploitation of CVE-2026-82055 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-2026-82055, GHSA-qqwq-hqp9-87gv, MINI-3fhm-rm3f-x923, UBUNTU-CVE-2026-82055.