react-markdown-canvasnpm
Malicious code in react-markdown-canvas (npm) Remove it immediately and rotate any exposed credentials.
What this malware does
Malicious package due to data exfiltration via Discord webhook on install. Collects IP, hostname, and date without consent.
The package react-markdown-canvas was found to contain malicious code.
The OpenSSF Package Analysis project identified 'react-markdown-canvas' @ 1001.0.0 (npm) as malicious.
It is considered malicious because:
- The package communicates with a domain associated with malicious activity.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for react-markdown-canvas (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging react-markdown-canvas across your stack and pipelines.
If you installed it — respond
react-markdown-canvas 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 react-markdown-canvas was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks react-markdown-canvas before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
References
Credits
- Amazon Inspector · finder
- OpenSSF: Package Analysis · finder
- SafeDep · finder
Detect & block this
O3 blocks react-markdown-canvas-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.