High · CVSS 6.5CVE-2026-82055

Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial of ServiceCVE-2026-82055

Answer in brief

CVE-2026-82055 records a High severity (CVSS 6.5) vulnerability in Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial of Service. The current sources do not mark it as known exploited. The current feed maps MongoDB/MongoDB Server (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 16, 2026Source checked Oct 25, 2026First seen by HOL Sep 8, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps MongoDB/MongoDB Server (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:mongodb:mongodb:::::-:::*	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
MongoDB/MongoDB Servergeneric	>=8.3.0 <8.3.9	8.3.9

Recommended response

Check inventory. Check lockfiles and deployed manifests for MongoDB/MongoDB Server.
Review the reported fix. Update MongoDB/MongoDB Server to 8.3.9 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Source referencejira.mongodb.org

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.