Medium 5.5Published Aug 5, 2026

CVE-2026-18954Incorrect authorization in the aggregation pipeline tool in Amazon AWS Labs DocumentDB MCP Server

Updated under an hour ago (2026-10-19 06:30 UTC)

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It affects AWS documentdb-mcp-server and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for AWS documentdb-mcp-server

Exploited in the last 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.

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: AMZN
NVD analysis: Analyzed
Record last updated: Aug 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

AWS documentdb-mcp-server aws:documentdb_mcp_server (from the name)	before 1.0.12	CNA record
amazon documentdb_mcp_server amazon:documentdb_mcp_server	before 1.0.12	NVD

References

https://github.com/awslabs/mcp/releases/tag/2026.04.20260408085348release-notes, patch
https://aws.amazon.com/security/security-bulletins/2026-076-aws/vendor-advisory
https://github.com/awslabs/mcp/security/advisories/GHSA-j694-4m5j-w8hcrelease-notes, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.