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Malicious package

lambethssrfcalRubyGems

Advisory published Updated

lambethssrfcal is a confirmed malicious RubyGems package (MAL-2026-7795) 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 lambethssrfcal (RubyGems)

MAL-2026-7795
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall lambethssrfcal

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

7aed2584e72b5f89ca566b1ce4a9c4e9474849ec736dc14264c97a930a40f89c
08f20fe8173229cb9d2ae3b91b15a8c7bc4a72cd8f8d818d7a96a206caaad723

Detection & response playbook

Malicious package
  1. Find it

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

  2. If you installed it — respond

    Remove lambethssrfcal 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 lambethssrfcal 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. lambethssrfcal 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-2026-02453RLUA-2026-08268

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks lambethssrfcal-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

lambethssrfcal (RubyGems) malicious package — MAL-2026-7795 | O3 Security