# MAL-2026-6577: Malicious code in int_sezzle_sfra (npm)


- **Type:** Malicious package
- **Package:** `int_sezzle_sfra` (npm)
- **Published:** 29 Jun 2026

## What is MAL-2026-6577?

MAL-2026-6577 is a malicious package in int_sezzle_sfra, published on 29 Jun 2026. 

### Official description

package.json declares `preinstall: node index.js`, which fires automatically on `npm install`. index.js collects host reconnaissance from the installer machine — hostname, OS info, username, uid/gid, shell, home directory, current working directory, and the output of `whoami` and `id` shelled out via child_process.exec — and POSTs the resulting JSON to a hardcoded Burp Collaborator OAST subdomain at https://1mopc72u2pqhsphbd3rmzirm9df43wrl.oastify.com/detox56. The package name mirrors the Salesforce Commerce Cloud (SFRA) cartridge naming convention used by Sezzle's internal `int_sezzle_sfra` integration cartridge; combined with empty author/description/license metadata and the install-time OAST beacon, this matches the canonical dependency-confusion pattern targeting a private vendor cartridge name. Installing this package causes unconsented exfiltration of installer identity and shell-command output to an attacker-controlled callback host.

## What should I do about MAL-2026-6577?

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-2026-6577 is a malicious package: int_sezzle_sfra (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-2026-6577/ (Markdown: https://insights.sbomify.com/MAL-2026-6577/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-6577

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-6577/
Summaries are generated and may contain mistakes; the official description above is the record.