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My Apache registered a data URI in access log.

/data:image/png%3bbase64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAECAMAAACeL25MAAAABlBMVEUzlME6qNuT3ZmEAAAAE0lEQVQI12NgZGRkYABiMAQzGQEAjAANk73rMwAAAABJRU5ErkJggg==

Apparently some browser did not understand the data URI and performed a request.

How to solve it?

Zero Piraeus
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Gustavo Costa De Oliveira
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1 Answers1

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Use some feature detector on client side (for example, Modernizr). And then check whether this feature is supported on document load. If it is not - replace all such urls with, for example, a path to a blank image.

In addition you could just block data uris in you firewall or on your front-end server.

Cruel_Crow
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