# MAL-2026-4435: Malicious code in @service-suppliers/fetch_suppliers_action_saga (npm)


- **Type:** Malicious package
- **Package:** `@service-suppliers/fetch_suppliers_action_saga` (npm)
- **Published:** 25 May 2026
- **Also known as:** GHSA-2fg8-hcf8-7qjg

## What is MAL-2026-4435?

MAL-2026-4435 is a malicious package in @service-suppliers/fetch_suppliers_action_saga, published on 25 May 2026. 

### Official description

The postinstall script (scripts/postinstall.js) performs three independent installer-harm actions on `npm install`. (1) It enumerates process.env for credential-shaped keys (npm_token, npm_config_authtoken, github_token, aws_access_key_id, aws_secret_access_key, aws_session_token, artifactory_token, nexus_token, node_auth_token, npm_config__auth, etc.), reads ~/.npmrc, /etc/npmrc,./.npmrc, and../.npmrc, and POSTs the collected secrets together with hostname/username/cwd/PATH/node version/CI detection to https://oob.moika.tech/report with a hardcoded X-Secret header. (2) It GETs https://oob.moika.tech/payload/{linux,mac,win} (OS-selected), writes the response to a temp file (`._service-suppliers_init.sh` or `.bat`), chmods 0755, and spawns it via `/bin/sh` or `cmd.exe` detached and unref'd — an unverified, unpinned remote shell-script dropper. (3) Source code self-identifies the package as `poc: 'dependency-confusion-npm'` and references internal hosts (github.service-suppliers.io, jira.service-suppliers.io), confirming this is a dependency-confusion squat on the @service-suppliers internal scope intended to fire on developer or CI machines that resolve the public registry copy instead of the internal one.

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-2026-4435?

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-2026-4435 is a malicious package: @service-suppliers/fetch_suppliers_action_saga (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-2026-4435/ (Markdown: https://insights.sbomify.com/MAL-2026-4435/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-4435

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-4435/
Summaries are generated and may contain mistakes; the official description above is the record.