# MAL-2026-5376: Malicious code in @doaction/rrweb-sdk (npm)


- **Type:** Malicious package
- **Package:** `@doaction/rrweb-sdk` (npm)
- **Published:** 9 Jun 2026
- **Also known as:** GHSA-j6f2-qf2j-5mh5

## What is MAL-2026-5376?

MAL-2026-5376 is a malicious package in @doaction/rrweb-sdk, published on 9 Jun 2026. 

### Official description

@doaction/rrweb-sdk@9.9.9 is a dependency-confusion / namespace-impersonation package targeting the rrweb session-recording SDK ecosystem. The package's `package.json` declares `"preinstall": "node scripts/postinstall.js"`, and `scripts/postinstall.js` does `require('@doaction/shared/bin/postinstall.js')` unconditionally on `npm install`. The transitive `@doaction/shared` dependency collects installer-side environment data and POSTs it to a Datadog endpoint (the package self-describes as Datadog environment telemetry, and `src/index.js` only re-exports `collectEnv` / `sendToDatadog` / `reportEnvToDatadog` — there is no rrweb session-recording code despite the name and keywords). The 9.9.9 version number is a canonical dependency-confusion marker designed to win semver resolution over a legitimately-named internal `rrweb-sdk` package. The package therefore exfiltrates the installer's environment variables (commonly containing CI tokens, cloud credentials, and internal hostnames) to a third party before the consumer's code ever runs. A second lifecycle script `scripts/preinstall.js` ships alongside but is not the one wired into the hook, consistent with templated mass-publication across multiple impersonated SDK names.

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-2026-5376?

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-2026-5376 is a malicious package: @doaction/rrweb-sdk (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-2026-5376/ (Markdown: https://insights.sbomify.com/MAL-2026-5376/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5376

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-5376/
Summaries are generated and may contain mistakes; the official description above is the record.