CVE-2026-9752 GeometryCollection with strict-winding polygon causes server crash during 2dsphere index key generation
An authorized user can crash the MongoDB server by querying a 2dsphere index with a specific GeoJSON GeometryCollection, causing a null-pointer dereference.
- 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-2026-9752?
CVE-2026-9752 is a high-severity vulnerability in Mongodb Mongodb, published on 9 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An authorized user could trigger a server crash by running a query with a 2dsphere index on a field that stores a GeoJSON GeometryCollection containing a Polygon with a strict-winding CRS.
Strict-winding polygons are intentionally unsupported for indexing, but the guard that rejects them does not inspect members of a GeometryCollection, allowing the unsafe path to be reached which ends with an ensuing null-pointer dereference.
Weakness: CWE-476
Which versions are affected by CVE-2026-9752?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 7.0.0 | 7.0.35, 8.0.24, 8.2.10, 8.3.3 |
Products include Mongodb Mongodb.
How do I fix CVE-2026-9752?
Upgrade mongodb to a fixed version for your release line: 7.0.35, 8.0.24, 8.2.10 or 8.3.3.
Is CVE-2026-9752 being exploited?
There is no known exploitation of CVE-2026-9752 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-2026-9752, GHSA-wpr8-m35f-2w5c, MINI-2525-f855-cc7h, MINI-2c9x-gv98-62c7, MINI-9gwr-vcw5-fqj2, MINI-fvf4-jv38-pq6m and 1 more.