Malware in signup-embedder
Malware discovered in the npm package signup-embedder. Systems with this package installed are considered fully compromised and require immediate remediation.
- Disclosed
- Last updated
- Blast radius
- Any system with signup-embedder installed or running
- Ecosystems
- Attack vectors
- Affected entities
- signup-embedder
The npm package signup-embedder has been identified as containing malware. According to the GitHub advisory (GHSA-8j4q-hx83-pfq9), any computer with this package installed or running should be considered fully compromised.\n\nThe advisory recommends that all secrets and keys stored on affected computers be rotated immediately from a different, uncompromised system. While the package should be removed, there is no guarantee that removal will eliminate all malicious software that may have been installed as a result of the package installation, as the outside entity may have gained full control of the system.\n\nThis is a critical supply chain incident affecting the npm ecosystem.
Indicators of compromise
- Packages
- signup-embedder
Remediation
- Immediately isolate any system with signup-embedder installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the signup-embedder package from all affected systems
- Conduct a full forensic analysis of affected systems to identify any additional malicious software
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider the affected systems as potentially fully compromised and plan for complete rebuild if critical systems are involved
Sources
- GitHub Advisory GHSA-8j4q-hx83-pfq9 · GitHub Advisory Database
Cite this entry
"Malware in signup-embedder." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 25, 2026; last updated June 25, 2026. https://supplychainattack.org/incident/malware-in-signup-embedder-1pgybu
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