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Variant Analysis: GHSA-hmh4-3xvx-q5hr
Testing potential bypasses and variants
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Vulnerable version: /root/.pruva/runs/ghsa-hmh4-3xvx-q5hr_20260220-144417/repro/deno
deno 2.6.7 (stable, release, x86_64-unknown-linux-gnu)

Fixed version: /tmp/deno_fixed_binary
deno 2.6.8 (stable, release, x86_64-unknown-linux-gnu)

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[TEST 1] BYPASS: File parameter injection (when no args provided)
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The fix only escapes arguments when args.length > 0.
When no args are provided, the file parameter is passed directly
to the shell without escaping, allowing command injection.

Testing on vulnerable version (v2.6.7)...
  BYPASS CONFIRMED: File parameter injection worked

Testing on fixed version (v2.6.8)...
  BYPASS CONFIRMED: File parameter injection worked

=== BYPASS CONFIRMED ON FIXED VERSION ===
This variant bypasses the security fix!
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[TEST 2] VARIANT: exec() function (which always uses shell: true)
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Testing if the exec() function has the same bypass

Testing exec() on vulnerable version...
  VARIANT CONFIRMED: exec() command injection worked

Testing exec() on fixed version...
  VARIANT CONFIRMED: exec() command injection worked

[TEST 3] VARIANT: Different shell metacharacters in file param
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Testing various metacharacters when no args provided

Testing metacharacters on vulnerable version...
  VULNERABLE to semicolon: echo hello; touch /tmp/bypass_marker
  VULNERABLE to and-operator: echo hello && touch /tmp/bypass_marker
  VULNERABLE to pipe+semi: echo hello | cat; touch /tmp/bypass_marker
  VULNERABLE to backtick: echo `touch /tmp/bypass_marker`
  VULNERABLE to dollar-paren: echo $(touch /tmp/bypass_marker)
  Metacharacter tests completed

Testing metacharacters on fixed version...
  VULNERABLE to semicolon: echo hello; touch /tmp/bypass_marker
  VULNERABLE to and-operator: echo hello && touch /tmp/bypass_marker
  VULNERABLE to pipe+semi: echo hello | cat; touch /tmp/bypass_marker
  VULNERABLE to backtick: echo `touch /tmp/bypass_marker`
  VULNERABLE to dollar-paren: echo $(touch /tmp/bypass_marker)
  Metacharacter tests completed

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VARIANT ANALYSIS SUMMARY
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✅ BYPASS CONFIRMED: The fix does not cover the 'file' parameter
   when called without arguments. This is a gap in the fix.

   Impact: HIGH - An attacker who can control the file/command
   parameter when args=[] can still achieve command injection.

   Recommendation: The fix should also escape/sanitize the 'file'
   parameter, or at minimum validate it doesn't contain shell
   metacharacters before executing.