CVE-2026-18694: CWE-125: Out-of-bounds Read in MongoDB MongoDB Server
An issue in MongoDB Server's geospatial query processing could allow an authenticated user with write privileges to cause certain malformed geometry data to be stored and later processed without proper validation. Subsequent queries against this data could then result in the server accessing memory outside its intended bounds. This could result in a server crash (denial of service) and may expose a limited amount of server process memory.
AI Analysis
Technical Summary
This vulnerability (CWE-125) in MongoDB Server's geospatial query processing allows an authenticated user with write privileges to insert malformed geometry data that bypasses proper validation. Subsequent queries against this data can cause the server to perform out-of-bounds memory reads. The flaw can result in server crashes (denial of service) and may expose a limited amount of server process memory. The affected versions explicitly include 7.0, 8.0, and 8.3.0. There is no vendor advisory or patch information currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation can cause the MongoDB Server to crash, resulting in denial of service. Additionally, a limited amount of server memory may be exposed due to out-of-bounds reads. The attacker must be authenticated with write privileges to exploit this vulnerability. No evidence of remote code execution or privilege escalation is indicated.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict write privileges to trusted users only and monitor for unusual geospatial query activity. No official fix or temporary workaround has been published at this time.
CVE-2026-18694: CWE-125: Out-of-bounds Read in MongoDB MongoDB Server
Description
An issue in MongoDB Server's geospatial query processing could allow an authenticated user with write privileges to cause certain malformed geometry data to be stored and later processed without proper validation. Subsequent queries against this data could then result in the server accessing memory outside its intended bounds. This could result in a server crash (denial of service) and may expose a limited amount of server process memory.
CVSS v4.0
Score 7.1high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-125) in MongoDB Server's geospatial query processing allows an authenticated user with write privileges to insert malformed geometry data that bypasses proper validation. Subsequent queries against this data can cause the server to perform out-of-bounds memory reads. The flaw can result in server crashes (denial of service) and may expose a limited amount of server process memory. The affected versions explicitly include 7.0, 8.0, and 8.3.0. There is no vendor advisory or patch information currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation can cause the MongoDB Server to crash, resulting in denial of service. Additionally, a limited amount of server memory may be exposed due to out-of-bounds reads. The attacker must be authenticated with write privileges to exploit this vulnerability. No evidence of remote code execution or privilege escalation is indicated.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict write privileges to trusted users only and monitor for unusual geospatial query activity. No official fix or temporary workaround has been published at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mongodb
- Date Reserved
- 2026-08-03T15:53:28.865Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7b7422bf8831d539467f7b
Added to database: 08/11/2026, 19:12:34 UTC
Last enriched: 08/11/2026, 19:28:21 UTC
Last updated: 08/11/2026, 20:26:54 UTC
Views: 5
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