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Malicious code in knot-rspec-formatter-json (RubyGems)

0
Critical
Published: 05/13/2026 (05/13/2026, 03:09:00 UTC)
Source: GCVE Database
Product: knot-rspec-formatter-json

Description

The knot-rspec-formatter-json RubyGems package version 3.13.5 is identified as malicious. It is part of the Go BufferZoneCorp and RubyGems knot-theory clusters of malicious packages. These packages are known to steal credentials, establish unauthorized SSH access, and manipulate build and workflow environment variables.

Affected software

RubyGemsghsa
knot-rspec-formatter-json
Affected versions
=3.13.5

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 07/18/2026, 23:50:21 UTC

Technical Analysis

The knot-rspec-formatter-json package at version 3.13.5 is a malicious RubyGems package associated with the Go BufferZoneCorp and RubyGems knot-theory clusters. The malicious behavior includes credential theft, unauthorized SSH access setup, and tampering with build and workflow environment variables. This package is flagged by the OpenSSF and Google Open Source Security sources as part of a cluster of malicious packages targeting RubyGems users.

Potential Impact

Users installing or using knot-rspec-formatter-json version 3.13.5 risk credential compromise, unauthorized SSH access to their systems, and interference with build or workflow environments. This can lead to unauthorized system control and potential further compromise of development or deployment pipelines.

Mitigation Recommendations

No official patch or remediation is currently documented. Since this package is identified as malicious, users should immediately remove knot-rspec-formatter-json version 3.13.5 from their environments and avoid installing it. Review and revoke any credentials or SSH keys that may have been compromised. Monitor build and workflow environments for unauthorized changes. Check vendor or repository advisories for updates or official guidance.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
MAL-2026-3635
Osv Schema Version
1.7.4
Aliases
["GHSA-mf6f-65vp-grjw"]
Ecosystems
["RubyGems"]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a5ba5f044ab8fbf7c805154

Added to database: 07/18/2026, 16:12:32 UTC

Last enriched: 07/18/2026, 23:50:21 UTC

Last updated: 07/31/2026, 15:40:00 UTC

Views: 9

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