Which versions of m8403v0lws are malicious?

The following RubyGems versions of m8403v0lws are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate m8403v0lws if I installed it?

Remove m8403v0lws 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.

I already installed m8403v0lws — how do I know if it already compromised me?

If m8403v0lws 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.

Is m8403v0lws part of a known attack campaign?

Yes — m8403v0lws is associated with the RLMA-2026-02723, RLUA-2026-08571 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find m8403v0lws across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for m8403v0lws (version 0.0.1).

Malicious package

m8403v0lwsRubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

m8403v0lws is a confirmed malicious RubyGems package (MAL-2026-8072) 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 m8403v0lws (RubyGems)

MAL-2026-8072

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

gem uninstall m8403v0lws

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

23af5c5ec4142ca7961115ac5407304d117b7d2eb50ef832772c7c2350bb5740

c12484ec3bf5c355c5fdbfdd4d8b0d007d99d13c7858e04a99276470a79738cf

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for m8403v0lws (version 0.0.1).
If you installed it — respond
Remove m8403v0lws 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.
Did it already run?
If m8403v0lws 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. m8403v0lws 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-2026-02723RLUA-2026-08571

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks m8403v0lws-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.

Malware detection Runtime egress monitoring

Explore

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