# MAL-2026-17514: Malicious code in minimal-a11y-contrast-check (npm)


- **Type:** Malicious package
- **Package:** `minimal-a11y-contrast-check` (npm)
- **Published:** 4 Oct 2026

## What is MAL-2026-17514?

MAL-2026-17514 is a malicious package in minimal-a11y-contrast-check, published on 4 Oct 2026. 

### Official description

Despite being advertised as a WCAG contrast checker, the package executes a self-invoking function at module load that runs host reconnaissance commands (whoami, id, hostname, uname -a, ls -la /, pwd, cat /etc/os-release) and collects filtered environment variables, then exfiltrates the results via DNS subdomain requests to davdpb8lhot13kgmnhp0863x9g83mpswq.oast.live and HTTP GET parameters to webhook.site/0492a36c-4d7b-408a-865c-226db25987ba. The exfiltration fires on any import of the package. Additionally, the module exports factories named after Wix Thunderbolt internal registries (thunderboltRegistry, siteAssetsRegistry, editorRegistry, corvidRegistry) and ships a registry-manifest.min.json pointing at static.parastorage.com/unpkg/minimal-a11y-contrast-check@1.0.0, impersonating internal Wix build infrastructure to be resolved via dependency confusion. A hardcoded 'internetbrands' tag embedded in the exfiltration payload indicates targeted reconnaissance.

## What should I do about MAL-2026-17514?

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-2026-17514 is a malicious package: minimal-a11y-contrast-check (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-2026-17514/ (Markdown: https://insights.sbomify.com/MAL-2026-17514/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-17514

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-17514/
Summaries are generated and may contain mistakes; the official description above is the record.