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Malicious package

lbcaltestmvxcveRubyGems

Advisory published Updated

lbcaltestmvxcve is a confirmed malicious RubyGems package (MAL-2026-7910) 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 lbcaltestmvxcve (RubyGems)

MAL-2026-7910
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall lbcaltestmvxcve

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

e4327aa0fb659b157aa758aba3b14eb920124507a529522a14255a3353572ca5
462c8f0c51c92afe2a3c109c6138f312b094a4e533afb3dd445d0ca0a38c6a1f

Detection & response playbook

Malicious package
  1. Find it

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

  2. If you installed it — respond

    Remove lbcaltestmvxcve 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 lbcaltestmvxcve 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. lbcaltestmvxcve 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-2026-02561RLUA-2026-08378

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks lbcaltestmvxcve-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

lbcaltestmvxcve (RubyGems) malicious package — MAL-2026-7910 | O3 Security