Vulnerability DatabaseCVE-2026-18954
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CVE-2026-18954
Published:August 05, 2026
Updated:August 06, 2026
Incorrect authorization in the aggregation pipeline tool in Amazon AWS Labs DocumentDB MCP Server before 1.0.12 might allow an authenticated MCP client to perform inappropriate write operations on the connected database via write-capable aggregation pipeline stages that bypass the read-only mode enforcement logic. To remediate this issue, users should upgrade to version 1.0.12 or later.
Affected Packages
https://github.com/awslabs/mcp.git (GITHUB):
Affected version(s) =0.0.0 <1.0.12
Fix Suggestion:
Update to version 1.0.12
awslabs.documentdb-mcp-server (PYTHON):
Affected version(s) >=0.0.1 <1.0.12
Fix Suggestion:
Update to version 1.0.12
Related Resources (2)
https://aws.amazon.com/security/security-bulletins/2026-076-aws/
https://github.com/awslabs/mcp/releases/tag/2026.04.20260408085348
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CVSS v4
Base Score:
5.7
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
CWE-863