RewindexCVEsAmazon Web Services
CVE-2026-116635: Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP Server
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.
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N · CWE-23, CWE-36
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
AWS: aws-serverless-mcp-server
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- aws.amazon.com/security/security-bulletins/2026-164-aws/ (opens in new tab)
- github.com/awslabs/mcp/security/advisories/GHSA-r6mm-377j-qg8m (opens in new tab)
- pypi.org/project/awslabs.aws-serverless-mcp-server/0.2.1/ (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)