In Apache Subversion versions up to and including 1.9.10, 1.10.4, 1.12.0, Subversion's svnserve server process may exit when a well-formed read-only request produces a particular answer. This can lead to disruption for users of the server.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-3785
http://subversion.apache.org/security/CVE-2018-11782-advisory.txt