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Malicious package

x51a3db3814RubyGems

Advisory published Updated

x51a3db3814 is a confirmed malicious RubyGems package (MAL-2026-9518) 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 x51a3db3814 (RubyGems)

MAL-2026-9518
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall x51a3db3814

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

44e30a0e8437733becea945507e8f498cdffff565847a2fca6a694458e4ba6c6
72989d1cfef3a704966dc82bc71d6b55d67bcd6fc184e4bcba0c2e1460f3c8be

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for x51a3db3814 (version 0.0.1).

  2. If you installed it — respond

    Remove x51a3db3814 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 x51a3db3814 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. x51a3db3814 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-2026-04169RLUA-2026-10102

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks x51a3db3814-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

x51a3db3814 (RubyGems) malicious package — MAL-2026-9518 | O3 Security