HighAdvisory sweepnpm1 affected version

better-dotenv3

better-dotenv3 has 1 version on the npm registry flagged in 1 incident we track. Only the exact versions listed below were named by the source advisories.

better-dotenv3 was recorded in a daily advisory sweep. The write-up groups it into a cluster with the evidence available at the time; check the cluster note before treating it as a confirmed compromise.

Affected versions

Check what you actually have installed with npm ls better-dotenv3.

better-dotenv3@1.0.1

The incident that flagged it

High25 Sept 2026

GitHub Advisory malware sweep - 2026-09-24 (late) + 2026-09-25 (npm `@nf-addons/am-global-header` + `@osl-design/react` `oob.algamil7x.xyz` DNS-OOB day-7 late-adds missed by yesterday`s sweep; `n8n-nodes-moonlet-helpers`/`-utils`/`n8n-nodes-flowstats` `mkicom.com` fake `.well-known/pki-validation/` dropper family with `104.21.3.16` bare-IP + magic-key RCE; `secure-env3` + `better-dotenv3` JPEG-APP13/APP14 hidden VBS/PowerShell Windows dotenv typosquat dropper family; `agency-test-exercise` + `agency-testts` `wscript.exe 4444.vbs` AES+ChaCha20 Windows dropper; `chromatitle` + `chromatitle-js` ANSI-color-lure obfuscated fetch-and-execute; `wallet-connect-adapter` Windows XOR-encrypted Python dropper; `simple-date-formatter-new-11/13/14/15` continuation of the `124.221.154.135` SSH-key + `oast.fun` campaign (13/14/15 new C2 hosts); `aliftech-ui` + `@birbalo/aliftech-ui` shared-`webhook.site` dep-confusion siblings; `@alphaspace/core` Yahoo-internal dep-confusion Pipedream + istio/yahoo DNS recon; `eslint-config-compact-base` AWS API Gateway CI recon; `c2-client` postinstall command channel; pip `prosocks` proxy-network hijack campaign + `my-private-pkg` + `vercel-runtime-python` Vercel dep-confusion pentests)

GHSA 2026-09-24 (late) + 2026-09-25: ~24 new npm advisories + 3 pip. Two oob.algamil7x.xyz day-7 late-adds yesterdays sweep missed (@nf-addons/am-global-header, @osl-design/react). New n8n-nodes-* mkicom.com dropper family. secure-env3/better-dotenv3 JPEG-hidden Windows dropper family. simple-date-formatter-new-11/13/14/15 extend the 124.221.154.135 campaign. @alphaspace/core` targets Yahoo internal builds.

Versions named here: 1.0.1

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

better-dotenv3 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 better-dotenv3 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.