Package evidence

anvil-app-server==1.16.0

Py Import Time Os System: Direct shell invocation via os.system / os.popen / os.exec*.

Trust signals

Why this verdict

PkgRadar discounts a release’s score when public reputation argues against novel malware. The verdict above already reflects these — the panel just explains what was applied.

Versions published: 40Mature · −50% score
First published: May 2020
Publisher: Anvil

Effective trust discount applied: −50% (max across signals — discounts don’t stack). New install-lifecycle deltas vs the previous release would clear the discount.

Recommended action

Block this update

Static evidence trips multiple high-signal indicators. Quarantine the release until the publisher validates the change or you can rule out the indicators below.

Inspect tarball Add to CI gate

Block this release in CIcurl · GitHub Actions

Fail the build when this package version is added or upgraded. Replace $PKGRADAR_TOKEN with a Pro / Team API key from your dashboard.

curl -fsS https://pkgradar.com/gate/npm \
  -H "Authorization: Bearer $PKGRADAR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"specs":["anvil-app-server==1.16.0"],"fail_on":"high"}'

GitHub Actions step:

- name: PkgRadar gate
  run: |
    curl -fsS https://pkgradar.com/gate/npm \
      -H "Authorization: Bearer ${{ secrets.PKGRADAR_TOKEN }}" \
      -H "Content-Type: application/json" \
      -d '{"specs":["anvil-app-server==1.16.0"],"fail_on":"high"}'

PublisherAnvil

Artifact bytes159,271

Previous versionnone

Published2026-06-09T10:35:35

SHA-256a7fac8a6cdf481bf878fc1da4d8ff8b3187ea1d0aa20d38d99dc7842e8dfeb9b

Why flagged

What the scanner saw

Py Import Time Os System: Direct shell invocation via os.system / os.popen / os.exec*.

Not observed: package install, lifecycle script execution, or sandbox execution. PkgRadar only inspects on-disk artifacts.

Availability ledger

available

high

4h agoLast checked

highRisk

56Score

1.16.0Version

Status history (1 event)

new → available4h ago · risk high · score 56 · status changed

Evidence

Static findings

4 static · 0 from release diff · showing high-signal first.

Severity	Kind	Path	Detail	Points
high	Py Import Time Os System	anvil_app_server-1.16.0/anvil_app_server/__init__.py	Direct shell invocation via os.system / os.popen / os.exec*.	56
medium	Py Import Time Subprocess	anvil_app_server-1.16.0/anvil_app_server/__init__.py	subprocess call — process spawning.	32
high	Py Runtime Base64 Decode	anvil_app_server-1.16.0/anvil_downlink_host/pdf_renderer.py	base64/hex decode combined with exec/subprocess — classic obfuscated payload pattern.	30

Show all 4 findings (low-signal and informational)

Severity	Kind	Path	Detail	Points
high	Py Import Time Os System	anvil_app_server-1.16.0/anvil_app_server/__init__.py	Direct shell invocation via os.system / os.popen / os.exec*.	56
medium	Py Import Time Subprocess	anvil_app_server-1.16.0/anvil_app_server/__init__.py	subprocess call — process spawning.	32
high	Py Runtime Base64 Decode	anvil_app_server-1.16.0/anvil_downlink_host/pdf_renderer.py	base64/hex decode combined with exec/subprocess — classic obfuscated payload pattern.	30
low	Sdist Has Setup Py	manifest	Source distribution executes setup.py at install time.	0