# MAL-2026-3509: Malicious code in pp-react-v5 (npm)


- **Type:** Malicious package
- **Package:** `pp-react-v5` (npm)
- **Published:** 11 May 2026

## What is MAL-2026-3509?

MAL-2026-3509 is a malicious package in pp-react-v5, published on 11 May 2026. 

### Official description

`pp-react-v5` is a dependency confusion package published at the inflated version `10.0.0` to win npm resolution over any internally-hosted package of the same name. The package contains only a `package.json` with no functional source code.

On installation the `preinstall` script executes a `wget` command that sends a GET request to `http://q9ou9xtw.requestrepo.com/` with the current username (`whoami`), working directory (`pwd`), and hostname as query parameters, beaconing the victim machine's identity to the attacker-controlled endpoint.

package.json declares preinstall and postinstall hooks that execute index.js on npm install. The script collects installer host identifiers via os.hostname(), os.userInfo().username, os.homedir(), process.cwd(), dns.getServers(), and the local package.json contents, then POSTs them over HTTPS to a hardcoded interact.sh out-of-band collector subdomain at bvfmpadujgjgmbtzeibi1n3vi1psox11k.oast.fun. The package name 'pp-react-v5', the description 'Internal App bUg b0UntY gollum22 h1', and the inflated 30.0.1 version are consistent with a dependency-confusion probe targeting an internal package name. Installing this package results in unauthenticated disclosure of installer identity, environment, and repository metadata to an attacker-controlled collector.

The OpenSSF Package Analysis project identified 'pp-react-v5' @ 10.0.0 (npm) as malicious.

It is considered malicious because:

- The package executes one or more commands associated with malicious behavior.

## What should I do about MAL-2026-3509?

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-2026-3509 is a malicious package: pp-react-v5 (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-2026-3509/ (Markdown: https://insights.sbomify.com/MAL-2026-3509/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-3509

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-3509/
Summaries are generated and may contain mistakes; the official description above is the record.