An issue in MongoDB Server's geospatial validation could allow an authenticated user with write privileges to cause an internal reference to be used… (CVE-2026-18700)
A vulnerability in MongoDB Server's geospatial validation allows an authenticated user with write privileges to trigger use-after-free conditions via concurrent operations on collections with specific validators. This flaw can cause the server to crash, resulting in a denial of service.
AI Analysis
Technical Summary
CVE-2026-18700 describes a use-after-free vulnerability in MongoDB Server's geospatial validation logic. An authenticated user with write permissions can exploit this by performing concurrent operations against a collection that uses a certain type of geospatial validator. The flaw leads to an internal reference being used after the associated memory has been freed, causing the server process to crash and deny service.
Potential Impact
The vulnerability does not impact confidentiality or integrity but can cause a denial of service by crashing the MongoDB server. This could disrupt availability for users relying on the affected database instance.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict write access to trusted users and avoid using the affected geospatial validators concurrently if possible.
An issue in MongoDB Server's geospatial validation could allow an authenticated user with write privileges to cause an internal reference to be used… (CVE-2026-18700)
Description
A vulnerability in MongoDB Server's geospatial validation allows an authenticated user with write privileges to trigger use-after-free conditions via concurrent operations on collections with specific validators. This flaw can cause the server to crash, resulting in a denial of service.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18700 describes a use-after-free vulnerability in MongoDB Server's geospatial validation logic. An authenticated user with write permissions can exploit this by performing concurrent operations against a collection that uses a certain type of geospatial validator. The flaw leads to an internal reference being used after the associated memory has been freed, causing the server process to crash and deny service.
Potential Impact
The vulnerability does not impact confidentiality or integrity but can cause a denial of service by crashing the MongoDB server. This could disrupt availability for users relying on the affected database instance.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict write access to trusted users and avoid using the affected geospatial validators concurrently if possible.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-q985-47v7-9c79
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-18700"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a7c9b71bf8831d539ce0571
Added to database: 08/12/2026, 16:12:33 UTC
Last enriched: 08/12/2026, 17:26:53 UTC
Last updated: 08/13/2026, 02:41:00 UTC
Views: 2
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