registry / jexkcode / 1.0.1

jexkcode@1.0.1

OSV Malicious Advisory

imported 24d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-16220 confirms this npm version as malicious. 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;...

Advisory

MAL-2026-16220

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in jexkcode (npm)

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.

Decision reason

OpenSSF Malicious Packages via OSV confirms jexkcode@1.0.1 as malicious (MAL-2026-16220): Malicious code in jexkcode (npm)

References

OSV advisory PACKAGE WEB WEB WEB

Source & flagged code

0 flagged

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Source & flagged code

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Findings

1 High

HighOsv Malicious Advisory

Affected versions and remediation

This report applies to jexkcode@1.0.1.

The same advisory and Firewall decision cover 2 recorded versions

1.0.1, 1.1.4

See version security history for other recorded verdicts.

Avoid installing jexkcode@1.0.1. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-09-16 10:15:09.146Z (UTC).

Source advisory published: 2026-09-16 00:00:00.000Z (UTC).

This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.