CVE-2026-82055: Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial of Service
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.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An authenticated user with write access to a collection that has a 2dsphere index can exploit it by inserting a specially crafted GeoJSON document.
What is the operational impact of successful exploitation?
Successful exploitation terminates the mongod process, causing a denial of service. The provided information does not indicate confidentiality or integrity impact.
What conditions must exist for an installation to be exposed?
The affected collection must use a 2dsphere index, and the attacker must be able to insert a specially crafted GeoJSON document into that collection.