In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when http request module parses HTTP response obtained from a server, folded headers are parsed incorrectly, which may lead to misinterpreting the response and using incorrect headers, MIME types, etc.
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2025:4263 https://access.redhat.com/errata/RHSA-2025:4263