# CVE-2026-18700: Use-After-Free in MongoDB Geospatial Validation Leads to Denial of Service

> CVE-2026-18700: Use-After-Free in MongoDB Geospatial Validation Leads to Denial of Service. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-18700
Last updated: 2026-10-23T21:10:00Z

- Published: 2026-08-11 18:40 UTC · Updated: 2026-10-23 21:10 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-416

## Description

An issue in MongoDB Server's geospatial validation could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed, through concurrent operations against a collection using a certain type of validator. This could result in a server crash, leading to 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-2026-18700)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-18700)
- [https://jira.mongodb.org/browse/SERVER-130117](https://jira.mongodb.org/browse/SERVER-130117)

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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-2026-18700 · Markdown: https://rewindex.com/cve/CVE-2026-18700.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-18700 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:18.020Z