self-v8npm
Advisory published Updated
self-v8 is a confirmed malicious npm package (MAL-2026-18445) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 2.1.8, 2.1.9…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in self-v8 (npm)
What this malware does
Malicious package. self-v8 is an npm package that harvests sensitive data on the victim host and exfiltrates it to an attacker-controlled Discord webhook. Classification: information stealer. The package provides no legitimate functionality, so all published versions are malicious. Full indicators are published at the reference below.
Malicious versions
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for self-v8 (8 malicious versions).
If you installed it — respond
self-v8 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 self-v8 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
References
Credits
- wormsign · finder
Detect & block this
O3 blocks self-v8-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.