Criticalnpm2 affected versions

@kuperka/chainguard-sdk

@kuperka/chainguard-sdk has 2 versions on the npm registry flagged in 1 incident we track. Other versions of this package are not implicated - only the exact versions listed below were named by the source advisories.

Affected versions

Check what you actually have installed with npm ls @kuperka/chainguard-sdk.

@kuperka/chainguard-sdk@1.0.2
@kuperka/chainguard-sdk@1.0.1

The incident that flagged it

Critical10 Aug 2026

GitHub Advisory npm CWE-506 sweep - 2026-08-10 batch (`iconova-react` + `postcss-initial-provider` on-chain Ethereum RPC dead-drop C2 loader pair, `svelte-kit-streak`+`kit-map-streak` Linux implant continuation of the map-streak-kit family, `@rblxts/services` catbox.moe Windows RAT sibling of last week's `@rbx-ts/services`, `@kuperka/chainguard-sdk` browser-form + wallet exfil, `xerohub-discord-voice` Discord-token stealer, `env-local` Windows persistent screen-capture + remote control, `hex-encode-utils` Cloudflare-Workers AES-GCM Python-payload loader, `cryptostock`/`tokocrytodev` Infura wallet-drainer, `simple-date-formatter-new-9/10` bash reverse shell to 124.221.154.135:4444, `polymarket-stake-mathss` log-taker.store loader, `chai-tracker` chai-spies impersonator with `dbconnectify` C2, `@noobaihome/amis-*-area-widget` Baidu-internal dep-confusion SSRF probe, and multi-vendor SQLite/postcss/commonjs/eth-library typosquat clusters)

46 npm CWE-506 advisories published 2026-08-10. Standouts: iconova-react+postcss-initial-provider use Ethereum RPC on-chain dead-drop C2 to fetch stage-2 IP addresses (same EtherHiding technique as the CHAINDROP keyv/cacheable worm); svelte-kit-streak+kit-map-streak continue the map-streak-kit Linux-implant family; env-local installs a Windows registry-persisted screen-capture + remote-control implant impersonating dotenv.

Versions named here: 1.0.1, 1.0.2

What to do if you installed one of these

Treat the machine as compromised rather than simply upgrading. Packages in these incidents typically execute at install time, so the payload has already run with whatever credentials were in the environment.

1.Rotate every credential that machine or CI job could reach - registry tokens, cloud keys, SSH keys, CI secrets - from a different machine.
2.Pin to a version not listed above, then reinstall from a clean lockfile.
3.Clear caches and private mirrors. Artifactory, Nexus, Verdaccio, and devpi routinely keep serving a tarball after the public registry has pulled it.
4.Read the incident write-up above - recommended actions differ per incident, and some have specific indicators of compromise worth grepping your logs for.

Check your whole project

@kuperka/chainguard-sdk is one of many packages in these incidents, and it is usually pulled in as a transitive dependency rather than one you installed directly. Paste your package-lock.json to check every dependency at once - it runs in your browser and nothing is uploaded.

Check my package-lock.json All flagged npm packages

Other packages in the same incident

If @kuperka/chainguard-sdk is in your tree, these are worth checking too - they were published by the same campaign.

See the full incident

Version data comes from the public advisories cited on each incident page. We list only versions those advisories name - we don't infer additional ones. Think this is wrong or incomplete? Tell us.