# MAL-2026-15645: Malicious code in kisama-js (npm)


- **Type:** Malicious package
- **Package:** `kisama-js` (npm)
- **Published:** 31 Aug 2026
- **Also known as:** GHSA-vqwx-8v7g-55j3

## What is MAL-2026-15645?

MAL-2026-15645 is a malicious package in kisama-js, published on 31 Aug 2026. 

### Official description

kisama-js@0.4.8 ships an obfuscated index.js that runs an HTTP+WebSocket agent binding 0.0.0.0:8000 by default and exposing /api/exec (POST) for shell command execution plus /api/ws/terminal backed by node-pty/bun-pty for interactive PTY control. It additionally exposes a full-filesystem REST surface (list/cat/upload/download/delete/move/cp) and cron/onetime task scheduling, giving any party who reaches the port full remote control of the installer's host. The agent contacts api.trycloudflare.com to publish itself through Cloudflare quick-tunnels, converting a local listener into an internet-reachable endpoint without the operator opening a port. Host fingerprinting is performed via icanhazip.com, ifconfig.me/ip, and api6.ipify.org, with OS/hostname/version collected via systeminformation and reported through the agent's status interface. index.js is heavily obfuscated (obfuscator.io string-array with ~1630 entries, control-flow flattening, ~3829 decoder inlines) and wraps process.stdout.write / process.stderr.write to suppress specific on-host diagnostic messages. The package also references the anonymous pastebin shz.al and declares a self-referential dependency on kisama-js ^0.3.0, pulling a different release line's code into the install of 0.4.8.

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-2026-15645?

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-2026-15645 is a malicious package: kisama-js (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-2026-15645/ (Markdown: https://insights.sbomify.com/MAL-2026-15645/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-15645

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-15645/
Summaries are generated and may contain mistakes; the official description above is the record.