The mod_dav_svn server in Subversion 1.8.0 through 1.8.11 allows remote attackers to cause a denial of service (memory consumption) via a large number of REPORT requests, which trigger the traversal of FSFS repository nodes.
http://lists.opensuse.org/opensuse-updates/2015-04/msg00008.html
https://security.gentoo.org/glsa/201610-05
http://subversion.apache.org/security/CVE-2015-0202-advisory.txt
http://www.mandriva.com/security/advisories?name=MDVSA-2015:192