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Package detail

bufferutil@4.0.9

Treat this as an investigation surface: start with package posture, then inspect binary evidence, finding clusters, and version drift before approving rollout.

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bufferutil@4.0.9

MEDIUM (38)

bufferutil@4.0.9 exposes crypto, filesystem, process with overall medium risk.

Overall riskMEDIUM (38)

Package-level aggregate score

Source matchLOW

Confidence in decompiled/source alignment

Binary inventory4

354 KB total analyzed size

Behavior familiesnone detected

Observed across all binaries

Risk score38

medium severity posture

Binary count4

Native artifacts recovered

ConfidenceLOW

Source/decompile alignment

Total size354 KB

Combined binary payload

Analyst takeaways

3 evidence summaries
No escalated findings

The current evidence set is dominated by expected native behavior.

0/4 binaries carry findings

Not every native artifact in a package deserves equal attention. Focus review where findings cluster.

binshield-worker analysis with low confidence

Use the model summary as triage guidance, then validate against imports, strings, and recovered functions.

Version history

1 analyzed versions
0101929384.0.9
4.0.9medium (38)Current investigation target
  • Confidence: low
  • Analysis model: binshield-worker
  • Data mode: Connected to API

Version drift

5.1.6 to 5.1.7

This version introduces additional behavior that deserves security review.

Version 5.1.7 adds stricter extension loading checks and a slightly larger native payload.

Risk increased by 4 pointsUse this as triage guidance, then validate against binary evidence below.
Added: Additional filesystem path validation before extension loading.Added: Guarded extension loading before execution.
  1. Validate whether any newly added filesystem or process behavior is expected.
  2. Compare binary inventory to ensure no unexpected native artifact was introduced.
  3. Review high-signal strings and imports before approving rollout.

Finding clusters

0 findings

No escalated findings were emitted for this package version.

Binary evidence

4 native artifacts

Related packages

Similar signal surface

No related packages surfaced from the current dataset.

How this score was computed

Methodology transparency
none0-0
low1-29
medium30-59
high60-79
critical80-100
38
NONE0-0

No behaviors or findings detected.

LOW1-29

Expected behaviors only. Safe for most environments.

MEDIUM30-59

Some review-worthy behaviors. Inspect before deploying in hardened environments.

HIGH60-79

Multiple risk signals. Manual review required before production use.

CRITICAL80-100

Severe risk indicators. Block until validated by a security engineer.

Scoring factors

Findings2-45 pts per finding

Severity-weighted: info=2, low=8, medium=18, high=30, critical=45

Behaviors3-28 pts per detected

network=14, filesystem=4, process=12, crypto=3, obfuscation=24, exfiltration=28

Import countUp to 6 pts

importCount / 4, capped at 6. More imports = larger attack surface.

Function countUp to 5 pts

functionCount / 20, capped at 5. Complexity indicator.

Package-level score = 65% highest binary score + 35% average binary score. Scores are deterministic and reproducible.

bufferutil Binary Analysis | BinShield