MalwarePublished 7 Jul 2026Updated 24 Sep 2026

uuext4c477b (RubyGems) · Malicious Code

Affects uuext4c477bSource GCVE Database

Malicious package : remove uuext4c477b and rotate any secrets on hosts that installed it.

Data as of 26 Oct 2026, 16:07 UTC

Classification

Malicious package

Published to RubyGems · OSV MAL-2026-9035

What to do

Remove uuext4c477b 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
RubyGemsuuext4c477b`pkg:gem/uuext4c477b`Other threats	Affected =0.0.1	Fixed in–

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Description

The RubyGems package 'uuext4c477b' version 0.0.1 contains malicious code as identified by the OpenSSF project. This package is classified as a malicious package rather than a traditional vulnerability with a patch. There is no CVSS score or detailed technical exploit information available. No known exploits in the wild have been reported. No official patch or remediation guidance is provided in the available data.

Impact

Use of the malicious 'uuext4c477b' package version 0.0.1 could lead to execution of malicious code within environments that install or run this package. The exact impact depends on the malicious payload, which is not detailed in the provided data. No known active exploitation has been reported.

Defensive guidance

Since this is a malicious package rather than a vulnerability with a patch, the primary mitigation is to avoid installing or using the 'uuext4c477b' RubyGems package version 0.0.1. Remove any existing installations of this package from your environment. Monitor package sources and use trusted repositories to prevent installation of malicious packages.

Summary

The RubyGems package 'uuext4c477b' version 0.0.1 has been identified as containing malicious code by the OpenSSF malicious packages database. This classification indicates that the package itself is intentionally harmful or compromised, rather than having a vulnerability that can be patched. No further technical details or exploit methods are provided. The package is flagged under the MAL-2026-9035 identifier and GHSA advisory GHSA-3xwg-h6jp-4x4p.

References

github.com/advisories/GHSA-3xwg-h6jp-4x4p (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Jul 2026, 21:17 UTC

Technical details

References

Community reviews