| Name | CVE-2026-53878 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1141629 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| python-django (PTS) | bullseye | 2:2.2.28-1~deb11u2 | fixed |
| bullseye (security) | 2:2.2.28-1~deb11u12 | fixed | |
| bookworm | 3:3.2.25-0+deb12u3 | fixed | |
| bookworm (security) | 3:3.2.25-0+deb12u2 | fixed | |
| trixie | 3:4.2.28-0+deb13u2 | vulnerable | |
| trixie (security) | 3:4.2.28-0+deb13u1 | vulnerable | |
| forky, sid | 3:5.2.16-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| python-django | source | bullseye | (not affected) | |||
| python-django | source | bookworm | (not affected) | |||
| python-django | source | (unstable) | 3:5.2.16-1 | 1141629 |
[trixie] - python-django <no-dsa> (Minor issue)
[bookworm] - python-django <not-affected> (DomainNameValidator introduced in Django 5.1)
[bullseye] - python-django <not-affected> (DomainNameValidator introduced in Django 5.1)
https://www.djangoproject.com/weblog/2026/jul/07/security-releases/
Fixed by: https://github.com/django/django/commit/d5d60ed0323cddaa0ce0237a26a3d49ac21ee05e (5.2.16)