registry / Data exfiltration / fanarena-common
fanarena-common
This report shows the evidence for fanarena-common@99.9.1, the only known version.
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 15h ago · by lpm-firewall-aiSource inspection confirms an automatic preinstall disclosure of hostname, home-directory, and username data to a fixed collector. This is an unconsented installation beacon, so the package should be blocked.
Static reason
One or more suspicious static signals were detected.
Trigger
Installing fanarena-common and its dependency.
Impact
Installation can expose these machine and user identifiers to the collector without installer consent.
Mechanism
The dependency's preinstall runs test.js, which hex-encodes the hostname, home directory, and username and embeds each value in an HTTP request hostname.
Attack narrative
Installing the package installs a remote dependency whose preinstall hook runs test.js. That file hex-encodes the hostname, home directory, and username, then sends requests to a fixed oastify.com subdomain containing each value. The dependency's request implementation performs HTTP requests to those URLs, creating automatic installation-time disclosure.
AI rationale
Source inspection confirms an automatic preinstall disclosure of hostname, home-directory, and username data to a fixed collector. This is an unconsented installation beacon, so the package should be blocked.
Evidence
package.json.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/package.json.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/test.js.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/index.js
Network endpoints1
fanarena-common.kocl0jnt3j4ez5jfph1sc4xj7adb12pr.oastify.com
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- The package installs a remote ltidisafe tarball, which declares a preinstall hook that runs test.js.
- The hook encodes the machine hostname, home directory, and username, then sends each value in a request to a fixed oastify.com subdomain.
- The dependency's download-speed function performs an HTTP request to the supplied URL, enabling install-time disclosure to that collector.
Evidence against
Behavioral surface
Trivial
Source & flagged code
7 flagged · loading sourcepackage.jsonView file
10"ltidisafe": "https://ltidi.storage.googleapis.com/depenconf/ltidisafe-3.9.8.tgz"
},
"author": "",
"license": "ISC"
}
High
Suspicious Lifecycle Evidence
The package installs a remote ltidisafe tarball, which declares a preinstall hook that runs test.js.
package.jsonView on unpkg · L10•Remote tarball dependency specs: ltidisafe@https://ltidi.storage.googleapis.com/depenconf/ltidisafe-3.9.8.tgz
Medium
Remote Tarball Dependency
Package manifest contains a dependency pinned to a remote tarball URL.
package.jsonView on unpkg.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/package.jsonView file
7"preinstall": "node test.js > /dev/null 2>&1",
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC"
}
Findings
6 High1 Medium1 Low
HighSuspicious Lifecycle Evidencepackage.json
HighSuspicious Lifecycle Evidence.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/package.json
HighAi Review Evidence.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/test.js
HighAi Review Evidence.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/test.js
HighSuspicious Dependency Evidence.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/index.js
HighAi Review Evidence.lpm-dependency-evidence-99690f4a-f2df-48d3-95fb-a6636df604a0/0/npm-linux/test.js
MediumRemote Tarball Dependencypackage.json
LowScripts Present
Affected versions and remediation
This report applies to fanarena-common@99.9.1.
The versions list below shows the verdict for each recorded version.
- Avoid installing fanarena-common@99.9.1. 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: .
Source advisory published: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.