Malware in regexp-ts
The npm package regexp-ts contains malware that provides full system compromise to attackers. Any computer with this package installed should be considered fully compromised and all secrets and keys rotated immediately from a different machine.
- Disclosed
- Last updated
- Blast radius
- Any system with regexp-ts installed or running
- Ecosystems
- Attack vectors
- Affected entities
- regexp-ts
The npm package regexp-ts has been identified as containing malware. According to the GitHub Security Advisory (GHSA-5p9w-932r-cr5f), any computer that has 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 computer. 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 initial compromise, given that the attacker may have gained full control of the system.\n\nUsers should treat any system with regexp-ts installed as potentially containing persistent malware and take appropriate incident response measures.
Indicators of compromise
- Packages
- regexp-ts
Remediation
- Immediately isolate any computer with regexp-ts installed from the network
- Rotate all secrets, API keys, and credentials from a different, uncompromised computer
- Remove the regexp-ts package from all affected systems
- Conduct a full forensic investigation and malware scan of affected systems
- Review system logs and network traffic for signs of unauthorized access or data exfiltration
- Consider full system reimaging if the compromise is confirmed to be widespread
Sources
- GitHub Advisory GHSA-5p9w-932r-cr5f · GitHub Advisory Database
Cite this entry
"Malware in regexp-ts." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed June 8, 2026; last updated June 8, 2026. https://supplychainattack.org/incident/malware-in-regexp-ts-t1lg1y
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