Description
In Django 2.2 before 2.2.22, 3.1 before 3.1.10, and 3.2 before 3.2.2 (with Python 3.9.5+), URLValidator does not prohibit newlines and tabs (unless the URLField form field is used). If an application uses values with newlines in an HTTP response, header injection can occur. Django itself is unaffected because HttpResponse prohibits newlines in HTTP headers.
Remediation
References
Related Vulnerabilities
Django Server-Side Request Forgery (SSRF) Vulnerability (CVE-2021-33571)
Internet Information Services Other Vulnerability (CVE-1999-0191)
ZenCart Permissions, Privileges, and Access Controls Vulnerability (CVE-2006-0697)
WordPress Plugin Import Spreadsheets from Microsoft Excel Cross-Site Scripting (10.1.3)