pfa-prettier-config (npm) · Malicious Code
Affects pfa-prettier-configSource GCVE Database
Malicious package : remove pfa-prettier-config and rotate any secrets on hosts that installed it.
Data as of 6 Aug 2026, 18:24 UTC
Malicious package
Published to npm · OSV MAL-2026-12407
What to do
Remove pfa-prettier-config from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmpfa-prettier-config | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (08f4b65c7534427cd8814e8c85a84b11c2201d10724c34bb99987bae83e0c5cc) The package is published as 'pfa-prettier-config' with description 'environment config reader', but contains no Prettier configuration or config-reading code. index.js unconditionally requires./_platform on load. _platform.js selects a per-OS asset path, fetches bytes from one of four Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) — with hostnames reassembled at runtime via string-concat (e.g. ["oob-worker.cf","102-baf.workers.dev"].join("")) — and falls back to a chunked DNS TXT download from tin.dl.well1.site. The fetched bytes are written to /var/tmp/.cache_<hex> or %TEMP%/dotnet_diag_<hex>.exe under cover names, chmod'd 0755, and spawned detached via cp.spawn('/bin/sh', ['-c', fp+' &'], {detached:true}).unref() or spawn('cmd',...). A second dropper is shipped in lib/telemetry.js (~81KB, disguised as an 'Analytics SDK') containing the same primitives (base64 chunk decode, chmodSync 0755 on 'extensionPath', cp.spawn('/bin/sh', ['-c', filePath+' &'])), with child_process required via the computed string require('child_'+'process'). Requiring or importing this package triggers download-and-execute of an attacker-hosted OS-specific binary. ## Source: ghsa-malware (3d367f5160b47afe3e72f884621b4a8f8946a3a07dfcd5c4c9fbd659c57a2b2a) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.