MalwarePublished 7 Jul 2026Updated 24 Sep 2026

zwknum1 (RubyGems) · Malicious Code

Affects zwknum1Source GCVE Database

Malicious package : remove zwknum1 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-2026-9864

What to do

Remove zwknum1 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
RubyGemszwknum1`pkg:gem/zwknum1`Other threats	Affected =0.0.2766	Fixed in–

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Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: ghsa-malware (9233e8c96027e0e9423c90f63ed3fc91082dc3fdc939d9f8c2926b6d60bf237e) --- Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/9fbb5fba02ba2f02395d3d2d43c31b2c482b7a9d/osv/malicious/rubygems/zwknum1/MAL-2026-9864.json))

Impact

Use of the 'zwknum1' package version 0.0.2766 may lead to compromise due to the presence of malicious code. Specific impacts are not detailed in the source data, but malicious packages generally pose risks such as unauthorized code execution, data theft, or system compromise.

Defensive guidance

Users should avoid using the 'zwknum1' package version 0.0.2766. Since this is a malicious package, the recommended action is to remove it from any environment and replace it with a trusted alternative. Monitor vendor advisories or the OpenSSF repository for updates or further guidance.

Summary

The 'zwknum1' RubyGems package at version 0.0.2766 has been identified as containing malicious code according to the OpenSSF malicious packages repository. This classification indicates that the package is intentionally harmful or contains code that could compromise systems using it. No further technical details, such as the nature of the malicious code or exploitation methods, are provided in the source data.

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