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From: Gautier write-only <gautier_niouzes@hotmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Web browser in Ada
Date: Fri, 23 Apr 2010 14:33:40 -0700 (PDT)
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Date: 2010-04-23T14:33:40-07:00
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> Could you refer to an existing browser vulnerability that is related
> to the core browser engine and that would be avoided by choosing
> another language?
> (I'm genuinely interested)

It is a very good question, that should be solved before jumping into
such a time-consuming project :-).

My impression is that a good part of vulnerabilities are indeed within
plug-ins, another good part is between the browser and a plug-in
(typically, browser X need to be patched but not the others nor the
plug-in), and the third part, important as well, is about CSS,
JavaScript, image storage or decoding, XML, HTML parsing and other
core parts of browsers. I had a glimpse on:
  http://www.mozilla.org/security/known-vulnerabilities/
and a randomly with
  http://www.google.com/search?q=browser+security+update

Hopefully someone more knowledgeable than me can answer your question,
or give percentages to the parts above...

G.