CVE search · CVE-2026-18954

CVE-2026-18954

medium 5.7

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.

Open in the NVD CVE.org JSON

Status: Analyzed
Published: 2026-08-05
Last changed: 2026-10-23
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Weakness: CWE-863

Severity

Version	Score	Vector	Source
CVSS 4.0	medium 5.7	`CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`	ff89ba41-3aa1-4d27-914a-91399e9639e5Secondary
CVSS 3.1	medium 5.5	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`	ff89ba41-3aa1-4d27-914a-91399e9639e5Secondary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

amazon · documentdb_mcp_server

References

https://aws.amazon.com/security/security-bulletins/2026-076-aws/Vendor Advisory
https://github.com/awslabs/mcp/releases/tag/2026.04.20260408085348Release Notes
https://github.com/awslabs/mcp/security/advisories/GHSA-j694-4m5j-w8hcVendor Advisory

CVE-2026-18954

Details

Severity

Affected products

References