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sandbox-agent

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Summary

sandbox-agent v0.4.1 was classified as CRITICAL RISK with a risk score of 147. Sigil detected 8 findings across 39 files, covering phases including network exfiltration, obfuscation, install hooks, code patterns. Review the findings below before installing this package.

CRITICAL RISK(147)

v0.4.1

25 March 2026, 20:42 UTC

by Sigil Bot

Risk Score

147

Findings

8

Files Scanned

39

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

HIGH

Makefile/script pipes remote content to shell

package/dist/providers/computesdk.js:32

      };
      await run(`curl -fsSL ${SANDBOX_AGENT_INSTALL_SCRIPT} | sh`);
      for (const agent of DEFAULT_AGENTS) {
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

HIGH

Makefile/script pipes remote content to shell

package/dist/providers/e2b.js:52

      );
      await sandbox.commands.run(buildShellCommand(`curl -fsSL ${SANDBOX_AGENT_INSTALL_SCRIPT} | sh`, true)).then((r) => {
        if (r.exitCode !== 0) throw new Error(`e2b install failed:
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

HIGH

Makefile/script pipes remote content to shell

package/dist/providers/vercel.js:31

      const sandbox = await Sandbox.create(await resolveCreateOptions(options.create, agentPort));
      await runVercelCommand(sandbox, "sh", ["-c", `curl -fsSL ${SANDBOX_AGENT_INSTALL_SCRIPT} | sh`]);
      for (const agent of DEFAULT_AGENTS) {
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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