Wikimedia Bugzilla is closed!

Currently, MediaWiki will produce a thumbnail of an SVG file up to the larger of
1024px or the "natural size" of the SVG.  This is sort of a security hole, since
SVG files can have arbitrarily large "natural size" without affecting the file
size at all.  See, for example,
[[Image:Map of Colorado counties, blank.svg]].

I propose there should be a maximum thumbnail size for SVG files; say 2000px or
so.  Wikimedia projects certainly never need images larger than this.  Then code
like [[Image:Foo.svg]] with no size specification would use the 2000px
thumbnail, instead of trying to make a gigantic thumbnail at the "natural size".