nano-perf has 2 versions on the npm registry flagged in 2 incidents we track. Only the exact versions listed below were named by the source advisories.
nano-perf 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 nano-perf.
31 GHSA CWE-506 advisories in the 24h ending 2026-08-20 06:00 UTC. Headliners: PyPI libasync cryptominer with Windows-registry persistence (campaign 2026-08-libasync, continuation of 2026-07-pyqt6darktheme), npm express-route-engine eval-loader that fetches JSON payloads from jsonbin.io, and base99-85xbase-x typosquat that streams caller-supplied private-key/seed material in cleartext to 168.231.81.80.
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
nano-perf 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.
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.
