Genivia gSOAP 2.7.x and 2.8.x before 2.8.75 allows attackers to cause a denial of service (application abort) or possibly have unspecified other impact if a server application is built with the -DWITH_COOKIES flag. This affects the C/C++ libgsoapck/libgsoapck++ and libgsoapssl/libgsoapssl++ libraries, as these are built with that flag.
https://outpost24.com/blog/gsoap-vulnerability-identified
https://lists.debian.org/debian-lts-announce/2019/02/msg00027.html