MalwarePublished 7 Jul 2026Updated 24 Sep 2026

zwknum3 (RubyGems) · Malicious Code

Affects zwknum3Source GCVE Database

Malicious package : remove zwknum3 and rotate any secrets on hosts that installed it.

Data as of 26 Oct 2026, 16:06 UTC

Classification

Malicious package

Published to RubyGems · OSV MAL-2026-9866

What to do

Remove zwknum3 from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
RubyGemszwknum3`pkg:gem/zwknum3`Other threats	Affected =0.0.2769	Fixed in–

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Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: ghsa-malware (2c6cefdc17ff057105b103da3301ca08cc888bb1a4ddfbf248b0ce77558e2a68) --- Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/9fbb5fba02ba2f02395d3d2d43c31b2c482b7a9d/osv/malicious/rubygems/zwknum3/MAL-2026-9866.json))

Impact

Use of the malicious 'zwknum3' package version 0.0.2769 could lead to compromise of systems or data depending on the malicious code's behavior. Since this is a supply chain threat, any project depending on this package version may be at risk of executing harmful code. No known exploits in the wild have been reported to date.

Defensive guidance

Users should avoid using the affected version (=0.0.2769) of the 'zwknum3' package. Review dependencies and remove or replace this package version if present. Monitor vendor or security advisories for updates or fixes.

Summary

The 'zwknum3' RubyGems package at version 0.0.2769 has been flagged as containing malicious code by the OpenSSF malicious packages project. This indicates that the package itself is intentionally harmful or contains backdoors or malware. The advisory is based on the GHSA identifier GHSA-2wpj-vwvg-3j75 and is cataloged under MAL-2026-9866. No further technical details or exploitation methods are provided.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Jul 2026, 16:40 UTC

Technical details

References

Community reviews