Summary
@vibe-agent-toolkit/vat-development-agents v0.1.18 was classified as CRITICAL RISK with a risk score of 417. Sigil detected 28 findings across 81 files, covering phases including network exfiltration, install hooks. Review the findings below before installing this package.
v0.1.18
20 March 2026, 16:13 UTC
by Sigil Bot
Risk Score
417
Findings
28
Files Scanned
81
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/dist/.claude/plugins/marketplaces/vat-skills/plugins/vat-development-agents/skills/vibe-agent-toolkit/resources/getting-started.md:277
# Reinstall bun
curl -fsSL https://bun.sh/install | bash
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-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
package/dist/.claude/plugins/marketplaces/vat-skills/plugins/vat-development-agents/skills/vibe-agent-toolkit__skills-distribution/SKILL.md:47
"build:vat": "vat build",
"postinstall": "vat skills install --npm-postinstall || exit 0"
},Why was this flagged?
npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
package/dist/skills/vibe-agent-toolkit/resources/getting-started.md:277
# Reinstall bun
curl -fsSL https://bun.sh/install | bash
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-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
package/dist/skills/vibe-agent-toolkit__skills-distribution/SKILL.md:47
"build:vat": "vat build",
"postinstall": "vat skills install --npm-postinstall || exit 0"
},Why was this flagged?
npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.
install-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
package/package.json:53
"validate": "bun run agents/agent-generator/validate-agent.ts",
"postinstall": "vat skills install --npm-postinstall || exit 0"
},Why was this flagged?
npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.
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