CVE-2026-116635

Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP Server

Published Nov 2, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP Server (aws-serverless-mcp-server) before v0.2.1 might allow an actor who can influence the MCP agent to read the contents of JSON files outside the intended deployment status directory. Where write access has been enabled, to create or overwrite JSON files outside that directory. This issue is reachable through directory traversal sequences or an absolute path supplied in the project name input.



To remediate this issue, users should upgrade to version v0.2.1.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP Server (aws-serverless-mcp-server) before v0.2.1 might allow an actor who can influence the MCP agent to read the contents of JSON files outside the intended deployment status directory. Where write access has been enabled, to create or overwrite JSON files outside that directory. This issue is reachable through directory traversal sequences or an absolute path supplied in the project name input. To remediate this issue, users should upgrade to version v0.2.1.
Title Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP Server
First Time appeared Aws
Aws aws-serverless-mcp-server
Weaknesses CWE-23
CWE-36
CPEs cpe:2.3:a:aws:aws-serverless-mcp-server:*:*:*:*:*:*:*:*
Vendors & Products Aws
Aws aws-serverless-mcp-server
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
AMZN
Published
Updated
Nov 6, 2026, 5:57 PM
Reserved
Oct 26, 2026, 6:00 PM
Status
Awaiting Analysis
Published
Nov 2, 2026, 10:17 PM
Modified
Nov 6, 2026, 6:17 PM