Malicious code in @wizloft/harness-context (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 (b0315deb3fb6b42e929a55eafaeaedbf1b428ee8873d4ae31f5ec9956f21b554) dist/index.js (the package's declared main) contains a heavily obfuscated obfuscator.io-style IIFE appended after the legitimate context-service code. On import, the payload stashes `global.r = require` and `global.m = module`, then issues HTTPS requests to an Ethereum public RPC endpoint (h.drpc.org) and a block-explorer account API to read state from contract 0xa322E5f3..., using that state to resolve a next-stage URL that is fetched and executed in-process. The obfuscated string array (~303 entries via a rotated decoder) hides `drpc.org`, `?module=ac`, `POST`, `application/json`, `Mozilla/5.`, and the contract address. This is the EtherHiding loader pattern: attacker-controlled contract state serves as a mutable pointer to arbitrary code executed in the installer/consumer process at require time. Behavior does not match the package's advertised purpose of a small typed capability contract. ## Source: ghsa-malware (e250ba61dd9623df22f284b1b5c2e41513954b57d1e4cc099f2321179a0673cc) 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

19 Aug 2026 08:33:13 UTC

Source modified

23 Sep 2026 01:00:12 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.