# MAL-2026-17520: Malicious code in rgx33-css-grid-utils (npm)


- **Type:** Malicious package
- **Package:** `rgx33-css-grid-utils` (npm)
- **Published:** 4 Oct 2026

## What is MAL-2026-17520?

MAL-2026-17520 is a malicious package in rgx33-css-grid-utils, published on 4 Oct 2026. 

### Official description

The package is published as `rgx33-css-grid-utils` but exports a set of module keys matching Wix thunderbolt internal registries (`thunderboltRegistry`, `siteAssetsRegistry`, `editorRegistry`, `corvidRegistry`, `dataBindingRegistry`, `documentManagementRegistry`, and others) — a dependency-confusion lure targeting Wix's internal build/runtime namespace. On module load, an IIFE collects host identifiers (hostname, pid, Node version, platform) and runs `child_process.execSync('id')` and `child_process.execSync('uname -r')` to capture the current user and kernel version. These values are encoded as DNS subdomain labels and sent via `fetch` to the interactsh/OOB collector `davdpb8lhot13kgmnhp0863x9g83mpswq.oast.live`, and in parallel to `https://webhook.site/0492a36c-4d7b-408a-865c-226db25987ba` with a `where=wix-blog` query parameter identifying the campaign target. The package ships no CSS grid functionality consistent with its name; the reconnaissance beacon is the entire payload.

## What should I do about MAL-2026-17520?

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-2026-17520 is a malicious package: rgx33-css-grid-utils (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-2026-17520/ (Markdown: https://insights.sbomify.com/MAL-2026-17520/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-17520

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-17520/
Summaries are generated and may contain mistakes; the official description above is the record.