Which versions of terminal-formatter are malicious?

Every published version of terminal-formatter on npm is considered malicious. Remove the package entirely.

How do I remediate terminal-formatter if I installed it?

terminal-formatter is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed terminal-formatter — how do I know if it already compromised me?

If terminal-formatter was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

How do I find terminal-formatter across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for terminal-formatter (all published versions).

Malicious package

terminal-formatternpm

Advisory published Apr 16, 2026Updated Apr 23, 2026

terminal-formatter is a confirmed malicious npm package (MAL-2026-2911) that steals credentials and exfiltrates sensitive data. Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in terminal-formatter (npm)

MAL-2026-2911

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall terminal-formatter

What this malware does

terminal-formatter is a malicious npm package that when installed (postinstall-hook) or imported sends local env variables, files and bash history to https://ghostraper[.]top and registers a new ssh key in .ssh/authorized_keys.

The package terminal-formatter was found to contain malicious code.

Malicious versions

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

ab93869d5c21b5d8424c3c527825b2f0051e5736740429dd67e71403474ee281

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for terminal-formatter (all published versions).
If you installed it — respond
terminal-formatter is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If terminal-formatter was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. terminal-formatter on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

Amazon Inspector · finder
indece · finder

Detect & block this

O3 blocks terminal-formatter-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database