The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp < v2.1.4 and < v6.0.6.Referenceshttps://hackerone.com/reports/1238709https://www.oracle.com/security-alerts/cpujan2022.htmlhttps://www.debian.org/security/2022/dsa-5170