I think this can mislead the developers to think mark_safe solves it all. The forums are full of answers with *Use mark_safe;* *Use htmlfield|safe;* Maybe Django should start warning about mark_safe on the logs, then change the behavior. (Or even deprecate and remove)
Things like this we tend to blame the users, but it's there for using and it says *"SAFE"*. On Sunday, January 28, 2018 at 1:14:27 PM UTC-3, 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 > <https://groups.google.com/d/msg/django-developers/c4fa2pOcHxo/EtT942WnyiAJ> > suggested > 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.: > > @register.filter > def sanitize_and_trust_html(value): > # Safe because we sanitize before trusting > return dangerously_trust_html(bleach.clean(value)) > > > -- You received this message because you are subscribed to the Google Groups "Django developers (Contributions to Django itself)" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-developers+unsubscr...@googlegroups.com. To post to this group, send email to firstname.lastname@example.org. Visit this group at https://groups.google.com/group/django-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/django-developers/c4da4fc8-6565-42d8-bb4a-d9a8601ae355%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.