The package otp-generator before 3.0.0 are vulnerable to Insecure Randomness due to insecure generation of random one-time passwords, which may allow a brute-force attack.
https://security.snyk.io/vuln/SNYK-JS-OTPGENERATOR-1655480
https://github.com/Maheshkumar-Kakade/otp-generator/issues/12
https://github.com/Maheshkumar-Kakade/otp-generator/commit/b27de1ce439ae7f533cec26677e9698671275b70