# MAL-2026-16299: Malicious code in @pwaplatform/module-sso-integration (npm)


- **Type:** Malicious package
- **Package:** `@pwaplatform/module-sso-integration` (npm)
- **Published:** 20 Sep 2026
- **Also known as:** GHSA-3gx2-xpw8-x42p

## What is MAL-2026-16299?

MAL-2026-16299 is a malicious package in @pwaplatform/module-sso-integration, published on 20 Sep 2026. 

### Official description

@pwaplatform/module-sso-integration@99.0.1 declares both preinstall and postinstall lifecycle scripts that execute payload.js on npm install. payload.js collects hostname, whoami, id, uname -a, the contents of /etc/passwd (up to 4096 bytes), cwd, INIT_CWD, the installing project's git remote and branch, its package.json metadata and top-level dependencies, npm config, CI environment variables, and node/platform information, base64/base64url-encodes the payload, and transmits it over plain HTTP to three hardcoded destinations: http://sobaka-kusaka.ru:8000/oob/<token>, http://sobaka-kusaka.ru:8898/c/<token>, and a Burp Collaborator subdomain at http://ii473egh1b4kbaw03rf7pkzik9q0er8fx.oastify.com/<token>. The @pwaplatform scope name, the implausibly high 99.0.1 version, and the out-of-band collaborator channel are consistent with a dependency-confusion attack against an internal scope; the README's 'authorized bug bounty canary' framing is author-controlled and does not reflect installer consent.

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.

The OpenSSF Package Analysis project identified '@pwaplatform/module-sso-integration' @ 99.0.0 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.

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

## What should I do about MAL-2026-16299?

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-2026-16299 is a malicious package: @pwaplatform/module-sso-integration (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-2026-16299/ (Markdown: https://insights.sbomify.com/MAL-2026-16299/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-16299

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-16299/
Summaries are generated and may contain mistakes; the official description above is the record.