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Malicious package

plugin-gem-exampleRubyGems

Advisory published Updated

plugin-gem-example is a confirmed malicious RubyGems package (MAL-2026-2402) that executes malicious code on install (malicious versions 99.99.99, 100.9.9). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in plugin-gem-example (RubyGems)

MAL-2026-2402
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall plugin-gem-example

Malicious versions

2 flagged
99.99.99100.9.9

Indicators of compromise (SHA-256)

7a99d094da7a66199dd2041d12901340335cbca2bf0f677f50d5493b8a6006f2
91811de6752879a88d98111e715fcc7fb9628fdac6013ed30c856aae56175c0c

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for plugin-gem-example (2 malicious versions).

  2. If you installed it — respond

    Remove plugin-gem-example from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If plugin-gem-example was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. plugin-gem-example on RubyGems has been identified as a malicious package (versions 99.99.99, 100.9.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-01692RLUA-2026-08949

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks plugin-gem-example-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

plugin-gem-example (RubyGems) malicious package — MAL-2026-2402 | O3 Security