CVE-2026-18954

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-08-05 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: X
AT: Present
VC: None
VI: High
VA: None

Description

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
amazon documentdb_mcp_server < 1.0.12

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.7 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.16%
Raw Score 0.001580
Percentile 5.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00158
2026-10-28
0.00158

Intelligence Sources

nvd ref →