CVE-2026-18698: CWE-863: Incorrect Authorization in MongoDB MongoDB Server
An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that should require more specific privileges. This could result in exposure of collection metadata and, on certain deployment configurations, unauthorized modification of system collection data.
AI Analysis
Technical Summary
This vulnerability (CWE-863) in MongoDB Server allows an authenticated user with limited database-scoped roles to bypass intended authorization restrictions and perform actions against protected system collections. The flaw could expose collection metadata and, depending on deployment configurations, permit unauthorized modifications to system collection data. The CVSS 4.0 base score is 5.3, indicating a medium impact with network attack vector, low attack complexity, and limited privileges required. No official patch or remediation level has been provided by the vendor as of the published date.
Potential Impact
An attacker with valid authentication and limited database-scoped privileges could access sensitive collection metadata and potentially modify system collection data without proper authorization. This could compromise data integrity and confidentiality within the affected MongoDB Server deployments.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict authenticated user privileges carefully and monitor access to system collections to minimize risk.
CVE-2026-18698: CWE-863: Incorrect Authorization in MongoDB MongoDB Server
Description
An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that should require more specific privileges. This could result in exposure of collection metadata and, on certain deployment configurations, unauthorized modification of system collection data.
CVSS v4.0
Score 5.3medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-863) in MongoDB Server allows an authenticated user with limited database-scoped roles to bypass intended authorization restrictions and perform actions against protected system collections. The flaw could expose collection metadata and, depending on deployment configurations, permit unauthorized modifications to system collection data. The CVSS 4.0 base score is 5.3, indicating a medium impact with network attack vector, low attack complexity, and limited privileges required. No official patch or remediation level has been provided by the vendor as of the published date.
Potential Impact
An attacker with valid authentication and limited database-scoped privileges could access sensitive collection metadata and potentially modify system collection data without proper authorization. This could compromise data integrity and confidentiality within the affected MongoDB Server deployments.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict authenticated user privileges carefully and monitor access to system collections to minimize risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mongodb
- Date Reserved
- 2026-08-03T15:53:35.403Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7b7422bf8831d539467f84
Added to database: 08/11/2026, 19:12:34 UTC
Last enriched: 08/11/2026, 19:28:04 UTC
Last updated: 08/12/2026, 03:28:47 UTC
Views: 5
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