Path Traversal in Amazon 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 directory via the savePath parameter. To remediate this issue, users should upgrade to version 0.1.5 or later.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (7.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Amazon AWS Transform Mcp Server
- AWS Aws-Transform-Mcp-Server — versions 0.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, Product, patch)
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory, Vendor Advisory)
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-18953?
- CVE-2026-18953 is a high-severity vulnerability in Amazon 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.
- Is CVE-2026-18953 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.