CVE-2026-53878

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53878.json",
    "cna_assigner": "DSF",
    "cwe_ids": [
        "CWE-144"
    ]
}

References

Affected packages

Git / github.com/django/django

Affected ranges

Type

GIT

Repo

https://github.com/django/django

Events

Introduced

9e7cc2b628fe8fd3895986af9b7fc9525034c1b0

Fixed

6c8eee41f778da87bdd17e27381d3705ed2d068b

Introduced

36b5f39d9372147f0e758f590e35ee2b2bc317dd

Fixed

e2a424605ac2e7e6e799496542fb2997207e2f23

Database specific

{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "5.2"
        },
        {
            "fixed": "5.2.16"
        },
        {
            "introduced": "6.0"
        },
        {
            "fixed": "6.0.7"
        }
    ]
}

Affected versions

5.*

5.2

5.2.1

5.2.10

5.2.11

5.2.12

5.2.13

5.2.14

5.2.15

5.2.2

5.2.3

5.2.4

5.2.5

5.2.6

5.2.7

5.2.8

5.2.9

6.*

6.0

6.0.1

6.0.2

6.0.3

6.0.4

6.0.5

6.0.6

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53878.json"