Steps to reproduce the issue :
get up-to-date debian bookworm,
apt-get install apache2 libxerces-c-samples [ see full output of output from dpkg --list > packages.txt ]
put attached schema.xsd in /var/www/html/schema.xsd ; note that file has a lot of padding; without it the issue cannot be triggered,
put attached file.xml anywhere in the file system
run /usr/bin/StdInParse -n -v=always -s -f < file.xml you’ll most likely get
Fatal Error at (file , line 0, char 0): internal error in NetAccessor
Fatal Error at (file stdin, line 2, char 121): fatal error during schema scan
the same works fine under debian-bullseye
I'm attaching files schema.xsd, file.xml, packages.txt so that you can reproduce the issue