jexkcode

Details

Versions 1.0.1 through 1.1.4 of jexkcode automatically follow a hard-coded WhatsApp newsletter whenever a WhatsApp connection opens. The package waits three seconds and calls newsletterFollow without obtaining user consent or exposing a configuration option. The README advertises newsletter support but does not disclose this automatic account modification. Versions through 1.1.1 used a malformed newsletter JID; version 1.1.2 corrected it. Subsequent commits removed both failure and success logs, so version 1.1.4 performs the automatic follow without visible output. This behavior is unrelated to the package's stated functionality and modifies the user's WhatsApp account without authorization.

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## Source: ghsa-malware (8f980863fb53dc94d2a73765b57ce8f4224675d722d63f3a9381eb8044415072)
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Compromised versions (6)

• 1.0.1
• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.