What is CVE-2026-18953?

CVE-2026-18953 is a high-severity vulnerability in Aws Aws-transform-mcp-server, classified under Path Traversal. CVSS score: 8.6/10. Published 2026-08-05.

How severe is CVE-2026-18953?

High severity. CVSS v3 base score is 8.6 out of 10.

Path Traversal in Aws Aws-transform-mcp-server

CVE-2026-18953

Improper limitation of a pathname to a restricted directory in the get_resource tool in Amazon awslabs.aws-transform-mcp-server 0.1.0 through 0.1.4 might allow a context-dependent actor to write arbitrary files outside the intended working…

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Aws Aws-transform-mcp-server — versions 0.1.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, patch)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes)

Frequently asked questions

What is CVE-2026-18953?: CVE-2026-18953 is a high-severity vulnerability in Aws Aws-transform-mcp-server, classified under Path Traversal. CVSS score: 8.6/10. Published 2026-08-05.
How severe is CVE-2026-18953?: High severity. CVSS v3 base score is 8.6 out of 10.