HTTP response splitting in Django

Published: 2021-05-06
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-32052
Exploitation vector Network
Public exploit N/A
Vulnerable software
Web applications / CMS

Vendor Django Software Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) HTTP response splitting

EUVDB-ID: #VU52942

Risk: Medium


CVE-ID: CVE-2021-32052

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Exploit availability: No


The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not correctly processes CRLF character sequences in URLValidator. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Note, the vulnerability affects Django installations on Python 3.9.5+.


Install updates from vendor's website.

Vulnerable software versions

Django: 3.0 - 3.2.1, 2.0 - 2.2.21

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?