Malicious Code Injection in @ikyyjee/ikkysingle: Covert Channel Subscription Vulnerability
Summary
MAL-2026-17356: Malicious code in @ikyyjee/ikkysingle (npm). Affects @ikyyjee/ikkysingle versions 0.1.2. No fix is published. How to fix ↓
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Background
The @ikyyjee/ikkysingle package is part of a larger family of forks derived from the Baileys WhatsApp Web library. It is designed to facilitate interactions with WhatsApp's API. However, this package has been identified as having a serious vulnerability that allows malicious actors to exploit the installer's authenticated WhatsApp session to subscribe users to unwanted channels without their consent.
Vulnerability Detail
This vulnerability originates from the package's design, which injects malicious code into the WhatsApp socket layer. Upon connection, the injected code sends an authenticated 'w:mex' FOLLOW query to attacker-controlled WhatsApp channels, using the victim's own session. The target JIDs are obfuscated using various techniques, making it difficult for users to detect the malicious behavior. The implications of this vulnerability include unauthorized subscriptions to channels, potentially leading to spam or unwanted content, although it does not exfiltrate credentials or execute arbitrary remote code.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @ikyyjee/ikkysingleIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, you can remove the @ikyyjee/ikkysingle package from your project to prevent any potential exploitation. You can do this by executing the command: 'npm uninstall @ikyyjee/ikkysingle'. Additionally, consider using alternative packages that do not have known vulnerabilities.
Conclusion
The @ikyyjee/ikkysingle package contains a significant vulnerability that allows malicious actors to exploit users' authenticated WhatsApp sessions. It is crucial for developers to update or remove this package to protect their applications and users from unauthorized channel subscriptions.
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FAQ
The vulnerability allows malicious code to subscribe users to unwanted WhatsApp channels using their own authenticated session.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The primary risk is unauthorized subscriptions to channels, which can lead to spam and unwanted content in the user's WhatsApp account.
Check the package repository for any updates or patches for @ikyyjee/ikkysingle. If available, updating the package will resolve the vulnerability.
As a temporary measure, you can uninstall the package to mitigate the risk until a proper update can be applied.
