@readystack/hmrc-fraud-prevention-header-lint@0.1.4
Not affiliated with ReadyStack (readystack.dev). No new versions are published here. These tools continue under the name Rulestamp, by the team behind getreadystack.com.
Finds the Gov-Client and Gov-Vendor header mistakes HMRC rejects, in your editor, offline, before you send the request.
AI Security Review
scanned 4d ago · by lpm-firewall-aiThe package sends undisclosed runtime usage telemetry by default for interactive free CLI runs, so it warrants a warning. The reported fields are limited and the source provides opt-out controls.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
A free CLI scan completes in an interactive terminal.
Impact
The vendor can count free CLI use. The event does not include file contents, project details, or credentials.
Mechanism
The CLI posts a limited usage event to the vendor endpoint; terminal checks and opt-out environment variables can suppress it.
AI rationale
The package sends undisclosed runtime usage telemetry by default for interactive free CLI runs, so it warrants a warning. The reported fields are limited and the source provides opt-out controls.
Evidence
cli.js
Network endpoints1
getreadystack.com/api/ev
Decision evidence
public snapshotAI called this Suspicious at 97.0% confidence as Unknown with medium false-positive risk.
Evidence for warning
- After a free CLI scan, the package sends a usage event containing only the package slug, CLI source, and a free-use reason to getreadystack.com.
- The usage event is gated on an interactive terminal and can be disabled with DO_NOT_TRACK=1 or READYSTACK_NO_TELEMETRY; CI runs are excluded.
- The README describes the CLI and its license but does not disclose the runtime usage event.
Evidence against
- The event contains no file contents, project paths, or credentials.
- The source exposes no lifecycle scripts; the package runs through its CLI entrypoint.
Behavioral surface
EnvironmentVarsFilesystemNetwork
HighEntropyStringsUrlStrings
NoLicense
Source & flagged code
5 flaggedlicense.jsView file
2'use strict';
L3: const https = require('https'), fs = require('fs'), path = require('path'), os = require('os');
L4: const ORG_ID = 'a5cdf664-d8e7-4f87-8895-056717aaba17';
...
L9: const RECHECK_MS = 7 * 24 * 3600 * 1000; // re-ask Polar every 7 days (refunds / cancellations)
L10: function storePath() { return path.join(process.env.READYSTACK_HOME || path.join(os.homedir(), '.config', 'readystack'), SLUG + '.json'); }
L11: function load() { try { return JSON.parse(fs.readFileSync(storePath(), 'utf8')); } catch (e) { return {}; } }
L12: function save(o) { try { fs.mkdirSync(path.dirname(storePath()), { recursive: true }); fs.writeFileSync(storePath(), JSON.stringify(o)); } catch (e) { /* read-only home: still work...
...
L31: req.on('error', function () { resolve({ ok: false, offline:
Critical
Credential Exfiltration
Source appears to send environment or credential material to an external endpoint.
license.jsView on unpkg · L22Trigger-reachable chain: manifest.bin -> cli.js -> license.js
L2: 'use strict';
L3: const https = require('https'), fs = require('fs'), path = require('path'), os = require('os');
L4: const ORG_ID = 'a5cdf664-d8e7-4f87-8895-056717aaba17';
...
L9: const RECHECK_MS = 7 * 24 * 3600 * 1000; // re-ask Polar every 7 days (refunds / cancellations)
L10: function storePath() { return path.join(process.env.READYSTACK_HOME || path.join(os.homedir(), '.config', 'readystack'), SLUG + '.json'); }
L11: function load() { try { return JSON.parse(fs.readFileSync(storePath(), 'utf8')); } catch (e) { return {}; } }
L12: function save(o) { try { fs.mkdirSync(path.dirname(storePath()), { recursive: true }); fs.writeFileSync(storePath(), JSON.stringify(o)); } catch (e) { /* read-only home: still work...
...
L31
Findings
3 Critical2 High3 Medium4 Low
CriticalCredential Exfiltrationlicense.js
CriticalTrigger Reachable Dangerous Capabilitylicense.js
CriticalPrevious Version Dangerous Deltacli.js
HighSandbox Evasion Gated Capabilitylicense.js
HighTrigger Reachable Credential Exfiltrationlicense.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to @readystack/hmrc-fraud-prevention-header-lint@0.1.4.
See all versions of @readystack/hmrc-fraud-prevention-header-lint for other recorded verdicts.
- Review the evidence and your use of @readystack/hmrc-fraud-prevention-header-lint@0.1.4 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.