Malicious code in @revizahoshii/baileys (npm)
The npm package @revizahoshii/baileys contains malicious code that silently subscribes the victim's WhatsApp account to attacker-controlled channels without user consent. This is done by injecting a covert subscription action into the WhatsApp socket layer, using the installer's authenticated session. The target channels are obfuscated or dynamically fetched, allowing attackers to change targets post-installation. The malicious behavior does not include credential theft, persistence, or remote code execution.
AI Analysis
Technical Summary
The @revizahoshii/baileys package is part of a large family of near-identical forks of the Baileys WhatsApp Web library that inject a covert channel-subscription action into the WhatsApp socket layer. Upon connection, the injected code issues an authenticated 'w:mex' FOLLOW query against attacker-chosen WhatsApp Channel/Newsletter JIDs, using the installer's authenticated WhatsApp session to silently subscribe the victim's account to channels without consent. The target JIDs are obfuscated via various techniques or fetched dynamically from attacker-controlled remote sources, allowing runtime changes without republishing the package. The malicious action abuses the installer's session to gain subscribers for attacker channels but does not exfiltrate credentials, establish persistence, or execute arbitrary remote code.
Potential Impact
Victims unknowingly subscribe their WhatsApp accounts to attacker-controlled channels, potentially exposing them to unwanted content or spam. The attack leverages the victim's authenticated session but does not compromise credentials or enable further remote code execution or persistence. This can lead to privacy violations and unsolicited channel subscriptions.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should avoid installing or using the @revizahoshii/baileys package versions 0.3.18 through 0.5.4. Review dependencies for forks of the Baileys library and replace them with trusted, verified packages. Monitor for updates from the package maintainer or npm advisories for any official fixes or removals.
Malicious code in @revizahoshii/baileys (npm)
Description
The npm package @revizahoshii/baileys contains malicious code that silently subscribes the victim's WhatsApp account to attacker-controlled channels without user consent. This is done by injecting a covert subscription action into the WhatsApp socket layer, using the installer's authenticated session. The target channels are obfuscated or dynamically fetched, allowing attackers to change targets post-installation. The malicious behavior does not include credential theft, persistence, or remote code execution.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The @revizahoshii/baileys package is part of a large family of near-identical forks of the Baileys WhatsApp Web library that inject a covert channel-subscription action into the WhatsApp socket layer. Upon connection, the injected code issues an authenticated 'w:mex' FOLLOW query against attacker-chosen WhatsApp Channel/Newsletter JIDs, using the installer's authenticated WhatsApp session to silently subscribe the victim's account to channels without consent. The target JIDs are obfuscated via various techniques or fetched dynamically from attacker-controlled remote sources, allowing runtime changes without republishing the package. The malicious action abuses the installer's session to gain subscribers for attacker channels but does not exfiltrate credentials, establish persistence, or execute arbitrary remote code.
Potential Impact
Victims unknowingly subscribe their WhatsApp accounts to attacker-controlled channels, potentially exposing them to unwanted content or spam. The attack leverages the victim's authenticated session but does not compromise credentials or enable further remote code execution or persistence. This can lead to privacy violations and unsolicited channel subscriptions.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should avoid installing or using the @revizahoshii/baileys package versions 0.3.18 through 0.5.4. Review dependencies for forks of the Baileys library and replace them with trusted, verified packages. Monitor for updates from the package maintainer or npm advisories for any official fixes or removals.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-17375
- Osv Schema Version
- 1.7.4
- Ecosystems
- ["npm"]
Threat ID: 6abd30852a4e24523d340163
Added to database: 09/30/2026, 15:53:41 UTC
Last enriched: 09/30/2026, 16:04:17 UTC
Last updated: 10/01/2026, 04:38:36 UTC
Views: 3
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