PatchTheCEVCVE-2026-18953: Improper limitation of a pathname to a restricted directory in the get_resource tool in Amazon awslabs.aws-tra
37
Routine
HIGH 8.6WATCHLISTUPGRADE
CVE-2026-18953 is a high-severity flaw (CVSS 8.6) affecting aws transform mcp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.6 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.2% (top 93%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2026-08-05 |
| Last modified | 2026-10-23 |
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
amazon aws transform mcp server UPGRADE
Affected: >= 0.1.0 and < 0.1.5
Fixed in: 0.1.5
Safe to downgrade to: a release before 0.1.0
1. Check installed version
pip show aws-transform-mcp-server
2. UPGRADE to 0.1.5
pip install --upgrade "aws-transform-mcp-server>=0.1.5"
3. If no update is available yet, DOWNGRADE to a release before 0.1.0
pip index versions aws-transform-mcp-server
pip install "aws-transform-mcp-server<0.1.0"
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.