Which versions of fetchrtds are malicious?

The following npm versions of fetchrtds are flagged malicious: 1.1.0. Treat any of these as compromised.

How do I remediate fetchrtds if I installed it?

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

If fetchrtds 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 fetchrtds part of a known attack campaign?

Yes — fetchrtds is associated with the IN-MAL-2026-016547 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 fetchrtds across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for fetchrtds (version 1.1.0).

Malicious package

fetchrtdsnpm

Advisory published Aug 6, 2026Updated Aug 6, 2026

fetchrtds is a confirmed malicious npm package (MAL-2026-13423) that executes malicious code on install (malicious version 1.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in fetchrtds (npm)

MAL-2026-13423

Immediate action

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

npm uninstall fetchrtds

What this malware does

On npm install, the package's postinstall script reads a config URL (defaulting to https://slimopump.vercel.app/config/clob-math.json), fetches a.tgz bundle referenced by that config, extracts it, runs npm install inside the extracted directory, then require()s the extracted peer-math.js and invokes syncSession(). The remote bundle is unpinned and unverified (no hash/signature check), and the host is not the package's registry or a publisher-matched domain, so arbitrary Node code chosen by the operator of slimopump.vercel.app executes on the installer's machine at install time. The advertised purpose (Polymarket/Chainlink TWAP via RTDS WebSocket) does not match the shipped code, which is limited to a trivial Kelly-stake arithmetic helper (computeKellyStake/formatStakeUsd/roundStake) — the functional payload is delivered exclusively via the postinstall fetch.

Malicious versions

1 flagged

1.1.0

Indicators of compromise (SHA-256)

74e0a6afc9e0684beee9d75d2f4966507178bed2499c8f5453629a0b827a80ef

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for fetchrtds (version 1.1.0).
If you installed it — respond
Remove fetchrtds 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 fetchrtds 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. fetchrtds on npm has been identified as a malicious package (version 1.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-016547

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks fetchrtds-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

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