MalwarePublished 7 Jul 2026Updated 24 Sep 2026

zlam_cal_jan2 (RubyGems) · Malicious Code

Affects zlam_cal_jan2Source GCVE Database

Malicious package : remove zlam_cal_jan2 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-2026-9621

What to do

Remove zlam_cal_jan2 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
RubyGemszlam_cal_jan2`pkg:gem/zlam_cal_jan2`Other threats	Affected =0.0.136	Fixed in–

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Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: ghsa-malware (f2dae1841178a458f6615e6540feb6a0c8449c8ebcb905c00de500b0bc1f27dd) --- Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/9fbb5fba02ba2f02395d3d2d43c31b2c482b7a9d/osv/malicious/rubygems/zlam_cal_jan2/MAL-2026-9621.json))

Impact

Installation or use of the 'zlam_cal_jan2' package version 0.0.136 may lead to execution of malicious code, potentially compromising the security of the environment where it is deployed. The exact impact is not detailed, but malicious packages typically risk data theft, unauthorized access, or system compromise. No known exploits have been reported in the wild to date.

Defensive guidance

The recommended action is to avoid using the 'zlam_cal_jan2' package version 0.0.136 entirely. Users should remove this package if installed and source dependencies from trusted repositories. Monitor official advisories for any updates or remediation guidance.

Summary

The 'zlam_cal_jan2' RubyGems package at version 0.0.136 is identified as containing malicious code. This classification comes from the OpenSSF malicious packages repository and is tracked under MAL-2026-9621 and GHSA-rcc3-pxv4-774j. The package is flagged as a security threat due to its malicious nature rather than a traditional vulnerability. No further technical details or exploit mechanisms are provided in the source data.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Jul 2026, 17:08 UTC

Technical details

References

Community reviews