# dokumentasi Django 2.2.9.dev20191202104323

# Catatan terbitan Django 1.4.20

18 Maret 2015

Django 1.4.20 memperbaiki masalah keamanan di 1.4.19.

## Mengurangi kemungkinan serangan XSS melalui mengalihkan URL penyediaan-pengguna

Django relies on user input in some cases (e.g. `django.contrib.auth.views.login()` and i18n) to redirect the user to an "on success" URL. The security checks for these redirects (namely `django.utils.http.is_safe_url()`) accepted URLs with leading control characters and so considered URLs like `\x08javascript:...` safe. This issue doesn't affect Django currently, since we only put this URL into the `Location` response header and browsers seem to ignore JavaScript there. Browsers we tested also treat URLs prefixed with control characters such as `%08//example.com` as relative paths so redirection to an unsafe target isn't a problem either.

Bagaimanapun, jika seorang pengembang bergantung pada `is_safe_url()` untuk menyediakan ssaran pengalihan aman dan menaruh URL itu kedalam sebuah tautan, mereka dapat menderita dari sebuah serangan XSS ketika beberapa peramban seperti Google Chrome mengabaikan kendali karakter pada awal dari URL di sebuah jangkar `href`.