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Malicious package

metatestfpepbeeoRubyGems

Advisory published Updated

metatestfpepbeeo is a confirmed malicious RubyGems package (MAL-2026-8090) that executes malicious code on install (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in metatestfpepbeeo (RubyGems)

MAL-2026-8090
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall metatestfpepbeeo

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

4c4f26752346e2a0573708311002d518bb2afc92c5a938a4ab2558cb4ea183dd
cb8219e03a2d612b99ecc137747b914f94e76d07ac7e4e42d92b319405b001fd

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for metatestfpepbeeo (version 0.0.1).

  2. If you installed it — respond

    Remove metatestfpepbeeo 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 metatestfpepbeeo 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. metatestfpepbeeo on RubyGems has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-02741RLUA-2026-08594

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks metatestfpepbeeo-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

metatestfpepbeeo (RubyGems) malicious package — MAL-2026-8090 | O3 Security