CVE-2021-32052
If an application uses values with newlines in an HTTP response, header injection can occur.
Does this matter?
Lower severity and a low EPSS score (3.17%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 3.17% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- djangoproject/django · fedoraproject/fedora
- Source
- cve@mitre.org
EPSS 3.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2021/05/06/1Mailing List, Patch, Third Party Advisory
- https://docs.djangoproject.com/en/3.2/releases/security/Patch, Vendor Advisory
- https://groups.google.com/forum/#%21forum/django-announce
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVKYPHR3TKR2ESWXBPOJEKRO2OSJRZUE/
- https://security.netapp.com/advisory/ntap-20210611-0002/Third Party Advisory
- https://www.djangoproject.com/weblog/2021/may/06/security-releases/Patch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2021/05/06/1Mailing List, Patch, Third Party Advisory
- https://docs.djangoproject.com/en/3.2/releases/security/Patch, Vendor Advisory
- https://groups.google.com/forum/#%21forum/django-announce
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVKYPHR3TKR2ESWXBPOJEKRO2OSJRZUE/
- https://security.netapp.com/advisory/ntap-20210611-0002/Third Party Advisory
- https://www.djangoproject.com/weblog/2021/may/06/security-releases/Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.