Path Traversal in AWS 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 (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.
Published .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, patch)
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory)
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116635?
- CVE-2026-116635 is a medium-severity vulnerability in AWS Aws-Serverless-Mcp-Server, classified under Relative Path Traversal. CVSS score: 6.1/10. Published 2026-11-02.
- How severe is CVE-2026-116635?
- Medium severity. CVSS v3 base score is 6.1 out of 10.