Which versions of blundlef are malicious?

The following RubyGems versions of blundlef are flagged malicious: 1.0.0, 1.0.61792. Treat any of these as compromised.

How do I remediate blundlef if I installed it?

Remove blundlef 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 blundlef — how do I know if it already compromised me?

If blundlef 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 blundlef part of a known attack campaign?

Yes — blundlef is associated with the RLMA-2026-07393 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 blundlef across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for blundlef (2 malicious versions).

Malicious package

blundlefRubyGems

Advisory published Sep 22, 2026Updated Sep 24, 2026

blundlef is a confirmed malicious RubyGems package (MAL-2026-16725) that executes malicious code on install (malicious versions 1.0.0, 1.0.61792). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in blundlef (RubyGems)

MAL-2026-16725

Immediate action

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

gem uninstall blundlef

Malicious versions

2 flagged

1.0.01.0.61792

Indicators of compromise (SHA-256)

2ded004ff8382aae891ed14ffcaab0c8bae5608c3b6ab80b9984e775de1300b1

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for blundlef (2 malicious versions).
If you installed it — respond
Remove blundlef 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 blundlef 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. blundlef on RubyGems has been identified as a malicious package (versions 1.0.0, 1.0.61792 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-07393

Credits

ReversingLabs · finder

Detect & block this

O3 blocks blundlef-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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