# CVE-2026-82055: Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial of Service

> CVE-2026-82055: Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial of Service. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-82055
Last updated: 2026-09-16T20:35:09Z

- Published: 2026-09-08 16:12 UTC · Updated: 2026-09-16 20:35 UTC · Assigner: mongodb
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.40%, 34th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-476

## 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.

## Affected vendors and products

- MongoDB: MongoDB Server

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-82055)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-82055)
- [https://jira.mongodb.org/browse/SERVER-130202](https://jira.mongodb.org/browse/SERVER-130202)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-82055 · Markdown: https://rewindex.com/cve/CVE-2026-82055.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-82055 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:40.418Z