halfcycle@0.4.7
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AI Security Review
scanned 11d ago · by lpm-firewall-aiThe CLI and exported helpers attach existing bearer credentials to requests at the configured service URL, which is not destination-restricted. Because the alternate URL is explicitly configured and the default is the Halfcycle service, this supports a warning for conditional credential exposure, not a block.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
A CLI command or exported helper makes a credential-bearing request while HALFCYCLE_SERVICE_URL points to an alternate host.
Impact
A configured third-party endpoint could receive the Halfcycle token; the source does not show that the package selects such a destination by default.
Mechanism
The CLI uses the environment setting to select the service origin, then builds requests from that origin and attaches the saved bearer token.
AI rationale
The CLI and exported helpers attach existing bearer credentials to requests at the configured service URL, which is not destination-restricted. Because the alternate URL is explicitly configured and the default is the Halfcycle service, this supports a warning for conditional credential exposure, not a block.
Evidence
dist/cli.jsdist/index.js
Network endpoints1
control.halfcycle.ai
Decision evidence
public snapshotAI called this Suspicious at 87.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The CLI can override the saved service URL with HALFCYCLE_SERVICE_URL, and its default service is control.halfcycle.ai.
- Credential-bearing requests send bearer tokens to URLs built from the credential’s service URL; CLI commands and exported helpers reach these request functions.
- The package manifest has no install lifecycle hook, and the inspected helper entrypoint dispatches commands from user arguments.
Evidence against
- The alternate service URL is explicitly supplied through environment configuration; absent that setting, the CLI uses the Halfcycle service.
- The inspected credential requests are used for named service operations, and the dependency entrypoint re-exports the Zod validation library.
Behavioral surface
ChildProcessCryptoEnvironmentVarsEvalFilesystemNetwork
HighEntropyStringsUrlStrings
Source & flagged code
6 flaggedbin/bin.bundle.mjsView file
16554// dist/git.js
L16555: import { spawnSync } from "node:child_process";
L16556: import { existsSync, readFileSync } from "node:fs";
High
Child Process
Package source references child process execution.
bin/bin.bundle.mjsView on unpkg · L16554dist/cli.jsView file
•matchType = previous_version_dangerous_delta
matchedPackage = halfcycle@0.4.6
matchedIdentity = npm:aGFsZmN5Y2xl:0.4.6
similarity = 0.800
summary = stored previous version shares package body but lacks this dangerous source file
Critical
Previous Version Dangerous Delta
This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.
dist/cli.jsView on unpkg4131// dist/control-origin.js
L4132: var DEFAULT_CONTROL_ORIGIN = "https://control.halfcycle.ai";
L4133: function resolveControlOrigin(env = process.env) {
L4134: const configured = env["HALFCYCLE_SERVICE_URL"]?.trim();
...
L4143: // dist/device-signin.js
L4144: import { spawn } from "node:child_process";
L4145: import { platform as platform3 } from "node:os";
Findings
1 Critical5 High3 Medium5 Low
CriticalPrevious Version Dangerous Deltadist/cli.js
HighChild Processbin/bin.bundle.mjs
HighSame File Env Network Executiondist/cli.js
HighSandbox Evasion Gated Capabilitydist/cli.js
HighCross File Remote Execution Contextdist/cli.js
HighRuntime Package Installdist/cli.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowEval
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to halfcycle@0.4.7.
See all versions of halfcycle for other recorded verdicts.
- Review the evidence and your use of halfcycle@0.4.7 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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