Summary
awslabs/mcp v2026-03-24 was classified as CRITICAL RISK with a risk score of 5430. Sigil detected 637 findings across 3593 files, covering phases including network exfiltration, install hooks, provenance, code patterns, obfuscation, credential access. Review the findings below before installing this package.
Package description: Official MCP Servers for AWS
v2026-03-24
24 March 2026, 15:17 UTC
by Sigil Bot
Risk Score
5430
Findings
637
Files Scanned
3593
Provenance
Registry
https://github.com/awslabs/mcpRepository
https://github.com/awslabs/mcpScanned From
https://github.com/awslabs/mcp.gitFindings by Phase
Phase Ordering
Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/.github/workflows/trivy.yml:107
run: |
curl -sSfL https://raw.githubusercontent.com/anchore/syft/e9e34948534ab945c7e750376235cfe0c442f532/install.sh | sh -s -- -b /usr/local/bin v1.39.0
curl -sSfL https://raw.githubusercontent.com/anchore/grype/43e7e3246ed01b1ec0ff54f9b054201ccbe78e3a/install.sh | sh -s -- -b /usr/local/bin v0.104.3Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/.github/workflows/trivy.yml:108
curl -sSfL https://raw.githubusercontent.com/anchore/syft/e9e34948534ab945c7e750376235cfe0c442f532/install.sh | sh -s -- -b /usr/local/bin v1.39.0
curl -sSfL https://raw.githubusercontent.com/anchore/grype/43e7e3246ed01b1ec0ff54f9b054201ccbe78e3a/install.sh | sh -s -- -b /usr/local/bin v0.104.3
syft scan "${{ runner.temp }}/image.tar" -o json > "${{ matrix.dockerfile }}/syft-results.json"Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/src/aws-diagram-mcp-server/Dockerfile:45
# Install Rust and Cargo with a newer version that supports edition2024
RUN curl --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/rust-lang/rustup/f7935a8ad24a445629ceedb2cb706a4469e1e5b3/rustup-init.sh | sh -s -- -v -y --default-toolchain nightly && \
. $HOME/.cargo/env && \Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/src/aws-healthomics-mcp-server/MCP_INSPECTOR_SETUP.md:15
```bash
curl -LsSf https://astral.sh/uv/install.sh | sh
```Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/src/aws-iot-sitewise-mcp-server/README.md:95
# Install UV if you don't have it yet
curl -sSf https://astral.sh/uv/install.sh | sh
Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/src/dynamodb-mcp-server/tests/evals/README.md:50
# Install uv if not already installed
curl -LsSf https://astral.sh/uv/install.sh | sh
Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
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