executable-stories-jestnpm
Advisory published Updated
executable-stories-jest is a confirmed malicious npm package (MAL-2026-5254) that steals credentials and exfiltrates sensitive data (malicious versions 3.1.1, 4.0.1, 5.0.1…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in executable-stories-jest (npm)
What this malware does
No concrete installer-harm signals were identified for this package version. No lifecycle scripts, hardcoded network destinations, credential-path reads, or dropper patterns were captured in the available evidence. Routing to human review because automated coverage was partial and a confident allow/block determination cannot be made on the evidence at hand.
The Miasma malware is a self-propagating worm that spreads across the npm registry by abusing weaponized binding.gyp files to achieve execution during package installation, bypassing security tools that only inspect package lifecycle scripts. Upon execution, the malware attempts to exfiltrate credentials and OIDC tokens for various cloud and registry services, and propagates by compromising other packages managed by the stolen accounts or committing backdoor files to GitHub repositories.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for executable-stories-jest (6 malicious versions).
If you installed it — respond
executable-stories-jest 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 executable-stories-jest 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks executable-stories-jest-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.