@zyrennofficiall/baileys@5.5.0
A WebSockets library for interacting with WhatsApp Web.
AI Security Review
scanned 2h ago · by lpm-firewall-aiThe package performs unsolicited WhatsApp account actions: socket creation schedules follows of four publisher-chosen newsletters, and connection startup follows another hard-coded channel by default. This is malicious under the account-action rule, even though following channels is otherwise a normal library capability.
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
Default socket construction schedules newsletter follows; opening the connection triggers another follow.
Impact
Changes the user's account by following channels they did not choose.
Mechanism
The socket uses FOLLOW queries for hard-coded newsletter IDs. The main channel follow runs unless autoFollow is explicitly set to false; newsletter socket construction also schedules four delayed follows.
Attack narrative
When the package creates its socket, it schedules four newsletter FOLLOW requests for hard-coded IDs. Once connected, it also follows a hard-coded update channel by default; users must opt out with autoFollow: false. These actions use the user's WhatsApp account without a request to follow those channels.
AI rationale
The package performs unsolicited WhatsApp account actions: socket creation schedules follows of four publisher-chosen newsletters, and connection startup follows another hard-coded channel by default. This is malicious under the account-action rule, even though following channels is otherwise a normal library capability.
Evidence
lib/Socket/index.jslib/Socket/newsletter.jslib/Socket/username.jslib/Defaults/index.js
Network endpoints2
WhatsApp newsletter servicewss://web.whatsapp.com/ws/chat
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- Socket creation defaults autoFollow to true and, after the WhatsApp connection opens, follows a hard-coded channel; the code documents only an opt-out.
- Creating the newsletter socket schedules four more hard-coded newsletter follows, decoding their IDs and issuing FOLLOW queries after delays.
- The newsletterFollow method sends the requested newsletter ID through the WhatsApp newsletter FOLLOW operation.
Evidence against
- The preinstall hook only checks the Node.js major version and exits on versions below 20.
- The package describes itself as a WhatsApp Web interaction library, so its normal socket and newsletter operations fit its stated purpose.
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 @zyrennofficiall/baileys@5.5.0.
See all versions of @zyrennofficiall/baileys for other recorded verdicts.
- Avoid installing @zyrennofficiall/baileys@5.5.0. 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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