# CVE-2026-116635: Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP Server

> CVE-2026-116635: Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP Server. CVSS 6.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-116635
Last updated: 2026-11-03T14:52:42Z

- Published: 2026-11-02 21:34 UTC · Updated: 2026-11-03 14:52 UTC · Assigner: AMZN
- CVSS: 6.1 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
- EPSS: 0.31%, 24th percentile (scored 2026-11-04)
- CISA KEV: no
- CWE: CWE-23, CWE-36

## 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.

## Affected vendors and products

- AWS: aws-serverless-mcp-server

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-116635)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-116635)
- [https://aws.amazon.com/security/security-bulletins/2026-164-aws/](https://aws.amazon.com/security/security-bulletins/2026-164-aws/)
- [https://github.com/awslabs/mcp/security/advisories/GHSA-r6mm-377j-qg8m](https://github.com/awslabs/mcp/security/advisories/GHSA-r6mm-377j-qg8m)
- [https://pypi.org/project/awslabs.aws-serverless-mcp-server/0.2.1/](https://pypi.org/project/awslabs.aws-serverless-mcp-server/0.2.1/)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-116635 · Markdown: https://rewindex.com/cve/CVE-2026-116635.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-116635 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T16:19:37.822Z