# MAL-2026-16341: Malicious code in pflag14570 (npm)


- **Type:** Malicious package
- **Package:** `pflag14570` (npm)
- **Published:** 21 Sep 2026
- **Also known as:** GHSA-qxgf-vc83-fc34

## What is MAL-2026-16341?

MAL-2026-16341 is a malicious package in pflag14570, published on 21 Sep 2026. 

### Official description

index.js is an IIFE that executes at module load, reads document.cookie, fetches a list of authenticated application paths (/profile, /admin, /api/me, /settings, and similar), extracts a flag-shaped substring from the responses, and POSTs the aggregated JSON to the hardcoded collector https://webhook.site/42c6d937-77c7-42a5-8678-ef06b4501e38. The package metadata is a stub with no legitimate documented function; the shipped body is a browser-context session-cookie stealer and endpoint scraper directed at a third-party attacker-controlled collector.

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-2026-16341?

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-2026-16341 is a malicious package: pflag14570 (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-2026-16341/ (Markdown: https://insights.sbomify.com/MAL-2026-16341/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-16341

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-16341/
Summaries are generated and may contain mistakes; the official description above is the record.