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Malicious package

oaklfjan9RubyGems

Advisory published Updated

oaklfjan9 is a confirmed malicious RubyGems package (MAL-2026-8366) that executes malicious code on install (malicious version 0.0.65232). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in oaklfjan9 (RubyGems)

MAL-2026-8366
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall oaklfjan9

Malicious versions

1 flagged
0.0.65232

Indicators of compromise (SHA-256)

d3a722557bcfa07fe56f8df7a774b9c328a7aca48a58ccb3b3cee7941ea5a2b5
bb3546f01029880c14de0842afc960a3be150e7f4c97311733a81d416ead908b

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for oaklfjan9 (version 0.0.65232).

  2. If you installed it — respond

    Remove oaklfjan9 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 oaklfjan9 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. oaklfjan9 on RubyGems has been identified as a malicious package (version 0.0.65232 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-03017RLUA-2026-08881

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks oaklfjan9-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

oaklfjan9 (RubyGems) malicious package — MAL-2026-8366 | O3 Security