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Malicious package

slnfive8120RubyGems

Advisory published Updated

slnfive8120 is a confirmed malicious RubyGems package (MAL-2026-8675) 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 slnfive8120 (RubyGems)

MAL-2026-8675
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall slnfive8120

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

1be64ebef24fbca9553d1bdc8736cdf81f71755894e3f3fa241dafc111b699c8
b063e0b0a7ca8d49386dbf3117a455f4f0a1dfeb9549aa20d6a5f1b9e349366e

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for slnfive8120 (version 0.0.1).

  2. If you installed it — respond

    Remove slnfive8120 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 slnfive8120 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. slnfive8120 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-2026-03326RLUA-2026-09224

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks slnfive8120-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

slnfive8120 (RubyGems) malicious package — MAL-2026-8675 | O3 Security