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Malicious package

rootmv26543RubyGems

Advisory published Updated

rootmv26543 is a confirmed malicious RubyGems package (MAL-2026-8539) 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 rootmv26543 (RubyGems)

MAL-2026-8539
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall rootmv26543

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

07fe15f6a2db5cd92e3934782b1acf7ce3b630533c3f82f1ef68fbc6d0f895e0
ba271c0a72040dea500ac514ad59cca01ae5faeac4d45b841d38e8b296d4720f

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for rootmv26543 (version 0.0.1).

  2. If you installed it — respond

    Remove rootmv26543 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 rootmv26543 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. rootmv26543 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-2026-03190RLUA-2026-09078

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks rootmv26543-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

rootmv26543 (RubyGems) malicious package — MAL-2026-8539 | O3 Security