MalwarePublished 7 Jul 2026Updated 24 Sep 2026

zhcalf4ed55 (RubyGems) · Malicious Code

Affects zhcalf4ed55Source GCVE Database

Malicious package : remove zhcalf4ed55 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-2026-9575

What to do

Remove zhcalf4ed55 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
RubyGemszhcalf4ed55`pkg:gem/zhcalf4ed55`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 (eaf243b39966a9cdaf4ace56153870cc3410dc990b8ff8259637af29bedb8011) --- Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/9fbb5fba02ba2f02395d3d2d43c31b2c482b7a9d/osv/malicious/rubygems/zhcalf4ed55/MAL-2026-9575.json))

Impact

Use of the 'zhcalf4ed55' version 0.0.1 package may introduce malicious code into dependent projects, potentially leading to compromise of systems or data depending on the malicious payload. No specific exploit details or active exploitation reports are available.

Defensive guidance

Avoid using the 'zhcalf4ed55' package version 0.0.1. Remove it from any projects where it is present. Since this is a malicious package rather than a vulnerability with a patch, remediation involves not installing or removing the package. Monitor official RubyGems advisories and the OpenSSF malicious packages list for updates.

Summary

The package 'zhcalf4ed55' version 0.0.1 in the RubyGems ecosystem has been identified as containing malicious code. This classification comes from the OpenSSF malicious packages repository and is tracked under MAL-2026-9575 and GHSA-9x25-8w8c-xxj8. There is no detailed technical vulnerability description or CVSS score available. The package is flagged as malicious rather than vulnerable due to a coding flaw.

References

github.com/advisories/GHSA-9x25-8w8c-xxj8 (opens in a new tab)

Community reviews

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What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Jul 2026, 17:14 UTC

Technical details

References

Community reviews