Malicious code in @bellaxchuu/skyblue (npm)
The npm package @bellaxchuu/skyblue version 2.1.2 is part of a large family of malicious forks of the Baileys WhatsApp Web library. These forks inject code that silently subscribes the victim's authenticated WhatsApp account to attacker-controlled channels without user consent. The targeted channel identifiers are obfuscated or dynamically fetched at runtime to evade detection. The malicious code abuses the installer's own WhatsApp session to increase subscribers for attacker channels but does not steal credentials, maintain persistence, or execute arbitrary code.
AI Analysis
Technical Summary
The @bellaxchuu/skyblue npm package version 2.1.2 is a malicious fork of the Baileys WhatsApp Web library that injects a covert subscription action into the WhatsApp socket connection. Upon connecting, the injected code sends an authenticated 'w:mex' FOLLOW query using the victim's WhatsApp session to silently subscribe the user to attacker-chosen WhatsApp Channel/Newsletter JIDs. The targeted JIDs are hidden via obfuscation techniques or dynamically fetched from attacker-controlled remote sources, allowing runtime changes without republishing the package. This behavior is consistent across a family of over 100 similar malicious forks. The malicious action is limited to channel subscription abuse and does not involve credential theft, persistence, or arbitrary code execution.
Potential Impact
The impact is unauthorized subscription of the victim's WhatsApp account to attacker-controlled channels, potentially leading to unwanted messages or spam. There is no credential theft, no persistence mechanism, and no arbitrary code execution involved. The attack leverages the victim's authenticated session to increase reach for attacker channels without user knowledge or consent.
Mitigation Recommendations
No official patch or remediation is indicated in the provided data. Users should avoid installing or using the @bellaxchuu/skyblue package version 2.1.2 and related malicious forks. Review and audit dependencies for suspicious or forked packages, especially those related to WhatsApp Web libraries. Since no patch information is available, check vendor advisories or trusted sources for updates. Consider removing or replacing the affected package to prevent unauthorized channel subscriptions.
Malicious code in @bellaxchuu/skyblue (npm)
Description
The npm package @bellaxchuu/skyblue version 2.1.2 is part of a large family of malicious forks of the Baileys WhatsApp Web library. These forks inject code that silently subscribes the victim's authenticated WhatsApp account to attacker-controlled channels without user consent. The targeted channel identifiers are obfuscated or dynamically fetched at runtime to evade detection. The malicious code abuses the installer's own WhatsApp session to increase subscribers for attacker channels but does not steal credentials, maintain persistence, or execute arbitrary code.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The @bellaxchuu/skyblue npm package version 2.1.2 is a malicious fork of the Baileys WhatsApp Web library that injects a covert subscription action into the WhatsApp socket connection. Upon connecting, the injected code sends an authenticated 'w:mex' FOLLOW query using the victim's WhatsApp session to silently subscribe the user to attacker-chosen WhatsApp Channel/Newsletter JIDs. The targeted JIDs are hidden via obfuscation techniques or dynamically fetched from attacker-controlled remote sources, allowing runtime changes without republishing the package. This behavior is consistent across a family of over 100 similar malicious forks. The malicious action is limited to channel subscription abuse and does not involve credential theft, persistence, or arbitrary code execution.
Potential Impact
The impact is unauthorized subscription of the victim's WhatsApp account to attacker-controlled channels, potentially leading to unwanted messages or spam. There is no credential theft, no persistence mechanism, and no arbitrary code execution involved. The attack leverages the victim's authenticated session to increase reach for attacker channels without user knowledge or consent.
Mitigation Recommendations
No official patch or remediation is indicated in the provided data. Users should avoid installing or using the @bellaxchuu/skyblue package version 2.1.2 and related malicious forks. Review and audit dependencies for suspicious or forked packages, especially those related to WhatsApp Web libraries. Since no patch information is available, check vendor advisories or trusted sources for updates. Consider removing or replacing the affected package to prevent unauthorized channel subscriptions.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-17347
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6abd30852a4e24523d3401bd
Added to database: 09/30/2026, 15:53:41 UTC
Last enriched: 09/30/2026, 16:07:45 UTC
Last updated: 10/01/2026, 04:47:50 UTC
Views: 5
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