CVE-2026-18954: Amazon Documentdb Mcp Server

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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 products

• Amazon Documentdb Mcp Server: before 1.0.12 (fixed in 1.0.12)

Published 2026-08-05. Last modified 2026-08-10.