The current releases of httpd (at the time of writing this email) have two issues when used with Subversion. At this point httpd doesn't release very often leaving some users with an unfortunate choice to leave their httpd unpatched from some security issues fixed by those releases or to deal with these additional bugs introduced in recent versions of httpd.
In order to help the end users I've put together some patches (that should be included in the next releases of Apache httpd) that resolve these issues. * PR 55397 : ABI change in mod_dav causes failures with older versions of SVN https://issues.apache.org/bugzilla/show_bug.cgi?id=55397 This issue presents itself when the client or the server are 1.6.x or older (specifically that they do not support HTTPv2). Users will see failures when trying to commit changes to paths that have URI unsafe characters in their names (e.g. paths with spaces). This will show up as an error about "Unable to PUT new contents for /path" in the httpd error logs. Patches: 2.4.x: https://people.apache.org/~breser/httpd/2.4.x/patches/pr55397.patch 2.2.x: https://people.apache.org/~breser/httpd/2.2.x/patches/pr55397.patch * PR 55306 : COPY fails when source is locked https://issues.apache.org/bugzilla/show_bug.cgi?id=55306 This issue presents itself with an 424 Failed Dependency when the source that you're copying is locked with `svn lock`. Patches: 2.4.x: https://people.apache.org/~breser/httpd/2.4.x/patches/pr55306.patch 2.2.x: https://people.apache.org/~breser/httpd/2.2.x/patches/pr55306.patch I believe some binary packages have included these patches already. But I'm not sure which ones have and have not. Hopefully those vendors can respond here to note that. Note that the patches are against httpd and not SVN so if the binary package you're using does not include Apache httpd and just uses the httpd included with your OS/distribution then it's up to the OS/distribution to have patched (which they likely have not).