OpenSSF/OSV advisory MAL-2026-13831 confirms this npm version as malicious. On every successful WhatsApp connection (connection.update === 'open'), the library fetches a JSON list of newsletter JIDs from https://raw.githubusercontent.com/noxXza/data/refs/heads/main/noxleys.json and, 30 seconds after connect, uses the installer's authenticated WhatsApp session to silently follow and mute each listed newsletter (newsletterWMexQuery with QueryIds.FOLLOW and QueryIds.MUTE)...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in noxleys (npm)
Details
On every successful WhatsApp connection (connection.update === 'open'), the library fetches a JSON list of newsletter JIDs from https://raw.githubusercontent.com/noxXza/data/refs/heads/main/noxleys.json and, 30 seconds after connect, uses the installer's authenticated WhatsApp session to silently follow and mute each listed newsletter (newsletterWMexQuery with QueryIds.FOLLOW and QueryIds.MUTE). The behavior is not documented in the README, no consent prompt is presented, and the URL points to a mutable branch under a personal GitHub repo owned by the package author, so the target set can be changed unilaterally at any time. The action leverages the installer's identity for reach-padding but does not exfiltrate credentials, session material, or message content, does not execute remote code, and does not establish persistence.
## Source: ghsa-malware (8ba82b97c92b3509778b79f3c857a258bf62d2a94c79e114dae5407df14425ed) 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.
Decision reason
OpenSSF Malicious Packages via OSV confirms noxleys@1.1.6 as malicious (MAL-2026-13831): Malicious code in noxleys (npm)