GNOME libsoup before 3.6.1 allows a buffer overflow in applications that perform conversion to UTF-8 in soup_header_parse_param_list_strict. There is a plausible way to reach this remotely via soup_message_headers_get_content_type (e.g., an application may want to retrieve the content type of a request or response).
https://gitlab.gnome.org/Teams/Releng/security/-/wikis/home
https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/407#note_2316401