Cross-Site Scripting (XSS) Vulnerability in Django's is_safe_url Function

CVE-2015-0220 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

The django.util.http.is_safe_url function in Django before 1.4.18, 1.6.x before 1.6.10, and 1.7.x before 1.7.3 does not properly handle leading whitespaces, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted URL, related to redirect URLs, as demonstrated by a "\njavascript:" URL.

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