CVE-2026-53878

Published: Jul 7, 2026Modified: Jul 7, 2026

5.3

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (Secondary)

Description

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.

Related CWEs

CWE-144

Improper Neutralization of Line Delimiters

The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as line delimiters when they are sent to a downstream component.

References (3)

https://docs.djangoproject.com/en/dev/releases/security/

Source: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92

https://groups.google.com/g/django-announce

Source: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92

https://www.djangoproject.com/weblog/2026/jul/07/security-releases/

Source: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92

Timeline

No history available yet.