MAL-2026-14253 Malicious code in react-dom-helpers (npm)
Malicious package
Published
MAL-2026-14253 is a malicious package: react-dom-helpers (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-2026-14253/ (Markdown: https://insights.sbomify.com/MAL-2026-14253/index.md)
- Package
- react-dom-helpers
- Registry
- npm
What is MAL-2026-14253?
MAL-2026-14253 is a malicious package in react-dom-helpers, published on 19 Aug 2026.
Official description
Package name typosquats
react-dom. On require('react-dom-helpers/client'), client.js decodes a base64-obfuscated Slack bot token and channel ID, enumerates local IPv4 addresses via os.networkInterfaces(), fetches the installer's public IP from api.ipify.org, and POSTs the collected host identifiers to https://slack.com/api/chat.postMessage using the hardcoded bearer token. The exfiltration routine is invoked unconditionally at module load. The base64 wrapping of the Slack credential is used to bypass secret scanners.What should I do about MAL-2026-14253?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.