Malicious code in z-deno-truth-bwhlsz (npm)

CISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.

No exploitation or prediction data is available here for these CVEs. This does not mean they are safe or unlikely to be exploited.

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (db0813755b79e157c644502848b1ff5af003fc82fb842b39676490d00f33e814) The package's `exports` field maps the `./package.json` subpath to `setup.js`, so any consumer resolving `require('z-deno-truth-bwhlsz/package.json')` executes JavaScript instead of reading the manifest. `setup.js` writes a Deno/Hono handler to `/tmp/h.tsx` that reads `/readflag`, `/flagserver`, `/app/backdoor.tsx`, and `/entrypoint.sh` from the host filesystem and returns their contents in the HTTP response, matching on a `hitcon{...}` pattern. The exports subpath hijack turns routine package-metadata resolution into arbitrary code execution on the installer, and the dropped file is a shipped exfiltration handler intended to be picked up by a Deno server on the host. While the file-read targets are specific to a CTF environment, the delivery mechanism (subpath hijack + filesystem drop) executes on any host that resolves the package's `./package.json` subpath. ## Source: ghsa-malware (b89fbde3be8da5aea0248c87b80d27aea1519fc5bb124d34bce0443ee7fd64ad) 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.

Source published

23 Sep 2026 05:08:32 UTC

Source modified

23 Sep 2026 09:30:05 UTC

Saved here

24 Oct 2026 13:17:17 UTC

Source terms

OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.