CVE-2026-53878
Published:July 07, 2026
Updated:August 04, 2026
An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16.
"DomainNameValidator" does not prohibit newlines in domain names (unless used via a form field, since "CharField" strips newlines). 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.
Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.
Django would like to thank Bence Nagy for reporting this issue.
Affected Packages
django (CONDA):
Affected version(s) >=5.2 <5.2.16Fix Suggestion:
Update to version 5.2.16django (CONDA):
Affected version(s) >=6.0 <6.0.7Fix Suggestion:
Update to version 6.0.7https://github.com/django/django.git (GITHUB):
Affected version(s) >=6.0 <6.0.7Fix Suggestion:
Update to version 6.0.7https://github.com/django/django.git (GITHUB):
Affected version(s) >=5.2 <5.2.16Fix Suggestion:
Update to version 5.2.16django (PYTHON):
Affected version(s) >=6.0 <6.0.7Fix Suggestion:
Update to version 6.0.7django (PYTHON):
Affected version(s) >=5.2 <5.2.16Fix Suggestion:
Update to version 5.2.16Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Line Delimiters
EPSS
Base Score:
0.21