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Malicious package

slnmid6500RubyGems

Advisory published Updated

slnmid6500 is a confirmed malicious RubyGems package (MAL-2026-8689) 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 slnmid6500 (RubyGems)

MAL-2026-8689
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall slnmid6500

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

5d8d99b1f0848dd5e562bff6d2752ed31ee3f86cee6b225ee8dbe31f5169c528
5cbf039a19c3236ddefd19afed762f1494e0bb0858a7580d0ff6eef87aa82d4d

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for slnmid6500 (version 0.0.1).

  2. If you installed it — respond

    Remove slnmid6500 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 slnmid6500 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. slnmid6500 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-2026-03340RLUA-2026-09238

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks slnmid6500-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

slnmid6500 (RubyGems) malicious package — MAL-2026-8689 | O3 Security