The team has identified a critical vulnerability in the http server of the most recent version of Node, where malformed headers can lead to HTTP request smuggling. Specifically, if a space is placed before a content-length header, it is not interpreted correctly, enabling attackers to smuggle in a second request within the body of the first.
https://www.cisa.gov/news-events/ics-advisories/icsa-24-319-08
https://security.netapp.com/advisory/ntap-20250418-0001/
https://lists.debian.org/debian-lts-announce/2024/09/msg00029.html