Yeah, I am also worried about the churn for no gain in my eyes. If users
overuse mark_safe, they will overuse dangerously_trust_html too…
On Wednesday, February 21, 2018 at 10:41:15 PM UTC+1, Josh Smeaton wrote:
> I agree that the names are misleading and we should probably provide
> better names. I'm wary of deprecating the old names because it'll create a
> lot of churn (some of which would be the right thing to do). Maybe we could
> just alias and warn when using the old name, leaving a decision on
> deprecation until some time in the future.
> On Monday, 29 January 2018 03:14:27 UTC+11, Stuart Cox wrote:
>> In my experience, misuse of mark_safe() — i.e. marking stuff safe which
>> *isn’t* actually safe (e.g. HTML from a rich text input) — is one of the
>> biggest causes of XSS vulnerabilities in Django projects.
>> The docs warn to be careful, but unfortunately I think Django devs have
>> just got too used to mark_safe() being *the way* to insert HTML in a
>> template. And it’s easy for something that was safe when it was authored
>> (e.g. calling mark_safe() on a hard-coded string) to be copied /
>> repurposed / adapted into a case which is no longer be safe (e.g. that
>> string replaced with a user-provided value).
>> Some other frameworks use scary sounding names to help reinforce that
>> there are dangers around similar features, and that this isn’t something
>> you should use in everyday work — e.g. React’s dangerouslySetInnerHTML.
>> Relatedly, this topic
>> making it more explicit that mark_safe() refers to being safe for use in
>> *HTML* contexts (rather than JS, CSS, SQL, etc).
>> Combining the two, it would be great if Django could rename mark_safe() to
>> dangerously_trust_html(), |safe to |dangerously_trust_html, @csrf_exempt to
>> @dangerously_csrf_exempt, etc.
>> Developers who know what they’re doing with these could then be
>> encouraged to create suitable wrappers which handle their use case safely
>> internally — e.g.:
>> def sanitize_and_trust_html(value):
>> # Safe because we sanitize before trusting
>> return dangerously_trust_html(bleach.clean(value))
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