@denzz221/baileys
A WebSockets library for interacting with WhatsApp Web.
This report shows the evidence for @denzz221/baileys@2.0.0. 11 of 11 known versions are blocked or flagged. See all versions.
AI Security Review
scanned 26m ago · by lpm-firewall-aiThe package automatically follows a hard-coded WhatsApp newsletter through the user’s session when its client socket is constructed. This is an unrequested account action toward a target selected by the publisher.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
Creating the package’s WhatsApp socket/client.
Impact
Uses the user’s WhatsApp session to follow a target chosen by the package publisher without the user requesting it.
Mechanism
A timer decodes a hard-coded newsletter ID and submits a FOLLOW operation through WhatsApp’s w:mex protocol.
Attack narrative
When the WhatsApp client socket is constructed, the newsletter socket schedules a delayed request that decodes a hard-coded newsletter identifier and sends a FOLLOW operation through WhatsApp’s w:mex protocol. This performs an account action toward a publisher-selected target without an explicit user request.
AI rationale
The package automatically follows a hard-coded WhatsApp newsletter through the user’s session when its client socket is constructed. This is an unrequested account action toward a target selected by the publisher.
Evidence
lib/Socket/newsletter.jslib/Socket/username.jslib/Socket/messages-send.jslib/Socket/index.jslib/Socket/mex.js
Network endpoints1
WhatsApp w:mex protocol (S_WHATSAPP_NET)
Decision evidence
public snapshotAI called this Malicious at 98.0% confidence as Malware with low false-positive risk.
Evidence for block
- Creating the newsletter socket schedules a delayed follow request for a hard-coded newsletter ID encoded in base64.
- The request decodes the ID and invokes the WhatsApp newsletter FOLLOW operation without an explicit user request.
- The newsletter socket is constructed by the username socket, which is used by the message socket; the package’s socket factory assembles the client layers.
Evidence against
- The preinstall hook runs engine-requirements.js, which only checks the Node.js major version and exits for versions below 20.
- The follow request is sent through the WhatsApp w:mex protocol, consistent with the package’s WhatsApp client functionality.
Behavioral surface
ChildProcessCryptoFilesystemNetworkShellWebSocket
HighEntropyStringsUrlStrings
Source & flagged code
9 flaggedpackage.jsonView file
•scripts.preinstall = node ./engine-requirements.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkglib/WABinary/constants.jsView file
600patternName = google_api_key
severity = high
line = 600
High
High Secret
Package contains a high-severity secret pattern.
lib/WABinary/constants.jsView on unpkg · L600600patternName = google_api_key
severity = high
line = 600
High
Secret Pattern
Google API key in lib/WABinary/constants.js
lib/WABinary/constants.jsView on unpkg · L600Findings
6 High4 Medium6 Low
HighInstall Time Lifecycle Scriptspackage.json
HighHigh Secretlib/WABinary/constants.js
HighSemantic Analysis Limitedlib/Utils/business.js
HighKnown Malware Source Similaritylib/Utils/messages-media.js
HighKnown Malware Source Fingerprint Signaturelib/Utils/messages-media.js
HighSecret Patternlib/WABinary/constants.js
MediumNetwork
MediumShips Build HelperWAProto/GenerateStatics.sh
MediumOversized Source FileWAProto/index.js
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowWeak Cryptolib/Utils/validate-connection.js
Affected versions and remediation
This report applies to @denzz221/baileys@2.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing @denzz221/baileys@2.0.0. 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: .
Source advisory published: .
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