SVG images are not safe to display inline because they may contain scripts and thus pose an XSS risk. It may be possible to sanitize them (either when uploaded or via the image proxy system) to alleviate this, but that's a suggestion for a future version rather than a bug.
Now that I saw this topic I started looking for a way to convert SVG into PNG.
View the source of the svg file and save it as image.svg.
After this the file can be converted: