CVE-2021-4238: Goutils Project Goutils

Critical severity, CVSS 9.1. EPSS: 1.4% chance of exploitation in the next 30 days.

Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions.

Affected products

• Goutils Project Goutils: before 1.1.1 (fixed in 1.1.1)

Published 2022-12-27. Last modified 2026-06-17.