Criticalnpm3 affected versions

pgserve

pgserve has 3 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 pgserve.

pgserve@1.1.13
pgserve@1.1.12
pgserve@1.1.11

The incident that flagged it

Critical21 Apr 2026

CanisterSprawl: self-propagating npm worm hits pgserve + Namastex packages

Socket and StepSecurity disclosed CanisterSprawl, a self-propagating npm worm that compromised at least 16 versions across Namastex Labs and related publishers from 21 April 2026. The postinstall hook harvests 38 env vars and filesystem secrets, encrypts via AES-256-CBC + RSA-4096, and exfiltrates to an Internet Computer Protocol canister. Stolen npm tokens are reused to publish further malicious versions. Tradecraft matches the earlier TeamPCP CanisterWorm campaign.

Versions named here: 1.1.11, 1.1.12, 1.1.13

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

pgserve 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 pgserve 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.