Poisoned Ruby Gems and Go Modules Exploit CI Pipelines for Credential Theft
May 01, 2026
Supply Chain Attack / Malware
A new software supply chain attack campaign has been observed using sleeper packages as a conduit to subsequently push malicious payloads that enabled credential theft, GitHub Actions tampering, and SSH persistence. The activity has been attributed to the GitHub account " BufferZoneCorp ," which has published a set of repositories that are associated with malicious Ruby gems and Go modules. As of writing, the packages have been yanked from RubyGems, and the Go modules have been blocked. The names of the libraries are listed below - Ruby: knot-activesupport-logger knot-devise-jwt-helper knot-rack-session-store knot-rails-assets-pipeline knot-rspec-formatter-json knot-date-utils-rb (Sleeper gem) knot-simple-formatter (Sleeper gem) Go: github[.]com/BufferZoneCorp/go-metrics-sdk github[.]com/BufferZoneCorp/go-weather-sdk github[.]com/BufferZoneCorp/go-retryablehttp github[.]com/BufferZoneCorp/go-stdlib-ext github[.]com/BufferZoneCorp/grpc-client github[.]com...
