GNOME libsoup before 3.6.0 allows HTTP request smuggling in some configurations because '\0' characters at the end of header names are ignored, i.e., a "Transfer-Encoding\0: chunked" header is treated the same as a "Transfer-Encoding: chunked" header.
For the record and reference, this is https://gitlab.gnome.org/GNOME/libsoup/-/issues/377
Are there any libsoup servers out there? It can do servers, yes, but the majority of the usage is to do client side, to talk to the server, not to be a server. I'd say I'm not aware of any libsoup server, but because I do not know many, I'm no reference here.
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Advanced Update Support Via RHSA-2024:9501 https://access.redhat.com/errata/RHSA-2024:9501
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