Summary
@modelcontextprotocol/ext-apps v1.3.1 was classified as CRITICAL RISK with a risk score of 270. Sigil detected 15 findings across 38 files, covering phases including obfuscation, install hooks. Review the findings below before installing this package.
v1.3.1
23 March 2026, 20:33 UTC
by Sigil Bot
Risk Score
270
Findings
15
Files Scanned
38
Provenance
Findings 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
package/package.json:60
"test:e2e:ui": "playwright test --ui",
"test:e2e:docker": "docker run --rm -e EXAMPLE -v $(pwd):/work -w /work -it mcr.microsoft.com/playwright:v1.57.0-noble sh -c 'apt-get update -qq && apt-get install -qq -y python3-venv curl > /dev/null && curl -LsSf https://astral.sh/uv/install.sh | sh && export PATH=\"$HOME/.local/bin:$PATH\" && npm i -g bun && npm ci && npx playwright test'",
"test:e2e:docker:update": "npm run build:all && docker run --rm -e EXAMPLE -v $(pwd):/work -w /work -itWhy 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
package/package.json:61
"test:e2e:docker": "docker run --rm -e EXAMPLE -v $(pwd):/work -w /work -it mcr.microsoft.com/playwright:v1.57.0-noble sh -c 'apt-get update -qq && apt-get install -qq -y python3-venv curl > /dev/null && curl -LsSf https://astral.sh/uv/install.sh | sh && export PATH=\"$HOME/.local/bin:$PATH\" && npm i -g bun && npm ci && npx playwright test'",
"test:e2e:docker:update": "npm run build:all && docker run --rm -e EXAMPLE -v $(pwd):/work -w /work -it mcr.microsoft.com/playwright:v1.57.0-nobleWhy 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
package/package.json:70
"docs:watch": "typedoc --watch",
"generate:screenshots": "npm run build:all && docker run --rm -e EXAMPLE -e GENERATE_SCREENSHOTS=1 -v $(pwd):/work -w /work mcr.microsoft.com/playwright:v1.57.0-noble sh -c 'apt-get update -qq && apt-get install -qq -y python3-venv curl > /dev/null && curl -LsSf https://astral.sh/uv/install.sh | sh && export PATH=\"$HOME/.local/bin:$PATH\" && npm i -g bun && npm ci && npx playwright test tests/e2e/generate-grid-screenshots.spec.ts'",
"prettier": "pretWhy 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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