Command Injection Affecting aws-sam-cli package, versions [,1.166.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-AWSSAMCLI-21460721
- published23 Oct 2026
- disclosed22 Oct 2026
- creditCipher by Causal Security
Introduced: 22 Oct 2026
NewCVE-2026-115414 (opens in a new tab)How to fix?
Upgrade aws-sam-cli to version 1.166.2 or higher.
Overview
aws-sam-cli is an AWS SAM CLI is a CLI tool for local development and testing of Serverless applications
Affected versions of this package are vulnerable to Command Injection via the Makefile generator in makefile_generator.py, which interpolates an attacker-controlled Terraform resource address into a shell command string with insufficient escaping. The generator escapes only double-quote characters, leaving backticks and $(...) constructs unescaped, so a malicious for_each key or tampered plan file can inject arbitrary shell commands that execute on the build host when a user runs sam build --hook-name terraform. Additionally, embedded newlines in a resource address can split a generated Makefile recipe into multiple physical lines, bypassing shell-level quoting entirely.