This update for libmicrohttpd fixes the following issues:
CVE-2013-7039: Stack-based buffer overflow in the MHDdigestauthcheck function in libmicrohttpd, when MHDOPTIONCONNECTIONMEMORY_LIMIT is set to a large value, allowed remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long URI in an authentication header. (bsc#854443)
Fixed various bugs found during a 2017 audit, which are more hardening measures and not security issues. (bsc#1041216)