# MAL-2026-14289: Malicious code in @wizloft/harness-validation (npm)


- **Type:** Malicious package
- **Package:** `@wizloft/harness-validation` (npm)
- **Published:** 19 Aug 2026
- **Also known as:** GHSA-7g98-grc6-6xjh

## What is MAL-2026-14289?

MAL-2026-14289 is a malicious package in @wizloft/harness-validation, published on 19 Aug 2026. 

### Official description

dist/index.js appends a heavily obfuscated obfuscator.io-style payload (string array _0x240a of length 303, decoder _0x4963, string-array rotation) after the clean TypeScript-compiled validation code. None of this obfuscated code is declared in dist/index.d.ts and it executes at top level on `import '@wizloft/harness-validation'`. Decoded string fragments include Ethereum RPC / block-explorer hostnames (`h.drpc.org`, `pc.io/eth`, `stapi.io`), a hardcoded attacker Ethereum address (`0xa322E5f3...`), Etherscan-style query parameters (`?module=account`, `filterby=from`), a spoofed browser User-Agent, and `application/json` / `content-encoding` request framing. The payload queries the block explorer for transactions from the hardcoded wallet, extracts a URL/payload from the transaction data, then fetches and executes the resolved content — a blockchain-based dead-drop that lets the publisher rotate the delivered code by posting a new transaction from that wallet, giving them a persistent mutable remote-code channel against every process that imports the library. Sibling packages in the @wizloft/* namespace (@wizloft/harness-evidence, @wizloft/harness-kernel) are declared dependencies at matching alpha versions and exhibit the same trojanized-library shape.

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.

## What should I do about MAL-2026-14289?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-14289 is a malicious package: @wizloft/harness-validation (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-14289/ (Markdown: https://insights.sbomify.com/MAL-2026-14289/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-14289

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-14289/
Summaries are generated and may contain mistakes; the official description above is the record.