CVE-2026-18707: CWE-617: Reachable Assertion in MongoDB MongoDB Server
An issue in MongoDB Server could allow an authenticated user, including one with no assigned privileges, to cause the server process to terminate unexpectedly by submitting a specially formed aggregation command. This could result in a denial of service.
AI Analysis
Technical Summary
This vulnerability in MongoDB Server (CWE-617) involves a reachable assertion triggered by a specially formed aggregation command submitted by an authenticated user. The flaw allows the user to cause the server process to crash, leading to denial of service. The issue affects version 8.3.0 of MongoDB Server. The CVSS 4.0 base score is 5.3, indicating medium severity. There is no vendor advisory or patch information available at this time, and no known exploits in the wild have been reported.
Potential Impact
An authenticated user, including those without privileges, can cause the MongoDB Server process to terminate unexpectedly, resulting in denial of service. This could disrupt availability of the database service until the server is restarted.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting access to authenticated users and monitoring for unusual aggregation command usage to reduce risk.
CVE-2026-18707: CWE-617: Reachable Assertion in MongoDB MongoDB Server
Description
An issue in MongoDB Server could allow an authenticated user, including one with no assigned privileges, to cause the server process to terminate unexpectedly by submitting a specially formed aggregation command. This could result in a denial of service.
CVSS v4.0
Score 5.3medium
Affected software
MongoDB
MongoDB Server
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in MongoDB Server (CWE-617) involves a reachable assertion triggered by a specially formed aggregation command submitted by an authenticated user. The flaw allows the user to cause the server process to crash, leading to denial of service. The issue affects version 8.3.0 of MongoDB Server. The CVSS 4.0 base score is 5.3, indicating medium severity. There is no vendor advisory or patch information available at this time, and no known exploits in the wild have been reported.
Potential Impact
An authenticated user, including those without privileges, can cause the MongoDB Server process to terminate unexpectedly, resulting in denial of service. This could disrupt availability of the database service until the server is restarted.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting access to authenticated users and monitoring for unusual aggregation command usage to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mongodb
- Date Reserved
- 2026-08-03T15:55:06.014Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7b6d42bf8831d539336154
Added to database: 08/11/2026, 18:43:14 UTC
Last enriched: 08/11/2026, 19:13:01 UTC
Last updated: 09/24/2026, 01:47:41 UTC
Views: 51
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