What does the supertag malware do?

The OpenSSF Package Analysis project identified 'supertag' @ 99.1.1 (crates.io) as malicious. It is considered malicious because: - The package communicates with a domain associated with malicious activity. - The package executes one or more commands associated with malicious behavior.

Which versions of supertag are malicious?

The following crates.io versions of supertag are flagged malicious: 99.1.1. Treat any of these as compromised.

How do I remediate supertag if I installed it?

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

If supertag 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.

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

Search your lockfiles and build artifacts for supertag (version 99.1.1).

Malicious package

supertagcrates.io

Advisory published Apr 28, 2026Updated Jul 23, 2026

supertag is a confirmed malicious crates.io package (MAL-2026-3129) that executes malicious code on install (malicious version 99.1.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in supertag (crates.io)

MAL-2026-3129

Immediate action

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

remove supertag

What this malware does

The OpenSSF Package Analysis project identified 'supertag' @ 99.1.1 (crates.io) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.
The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged

99.1.1

Indicators of compromise (SHA-256)

8af13a06fb931a42d83e13b19fd998ff62e59ef3d56302bfe9d257e07e2bad46

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for supertag (version 99.1.1).
If you installed it — respond
Remove supertag 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 supertag 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. supertag on crates.io has been identified as a malicious package (version 99.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks supertag-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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