MalwarePublished 7 Jul 2026Updated 24 Sep 2026

zztest4098 (RubyGems) · Malicious Code

Affects zztest4098Source GCVE Database

Malicious package : remove zztest4098 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-2026-9983

What to do

Remove zztest4098 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
RubyGemszztest4098`pkg:gem/zztest4098`Other threats	Affected =0.0.1	Fixed in–

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Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: ghsa-malware (9c1453200a59f43406f1e48537fa57f84a4d193bfe75dd9120dbf9146028a3b8) --- Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/9fbb5fba02ba2f02395d3d2d43c31b2c482b7a9d/osv/malicious/rubygems/zztest4098/MAL-2026-9983.json))

Impact

Use of the 'zztest4098' RubyGems package version 0.0.1 may lead to compromise of systems or data due to the presence of malicious code. The exact impact depends on the malicious payload within the package, which is not detailed in the available information. No known active exploitation has been reported.

Defensive guidance

Avoid using the 'zztest4098' RubyGems package version 0.0.1. Monitor RubyGems sources and advisories for any updates or official guidance regarding this malicious package.

Summary

The RubyGems package 'zztest4098' version 0.0.1 is identified as containing malicious code according to the OpenSSF malicious packages database (MAL-2026-9983). This classification indicates that the package itself is intentionally harmful or contains code designed to compromise systems or data. No further technical details or exploitation methods are documented in the provided data. The package is flagged as a security threat due to its malicious nature rather than a traditional vulnerability.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Jul 2026, 16:26 UTC

Technical details

References

Community reviews