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CVE-2026-53878PYSEC-2026-2092BIT-DJANGO-2026-53878GHSA-8QCX-XF44-272X

Header injection possibility since DomainNameValidator accepted newlines in input

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.0.7, 5.2.16
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • django

    From 6.0 · fixed in 6.0.7; From 5.2 · fixed in 5.2.16

  • djangoPyPI

    From 5.2 · fixed in 5.2.16; From 6.0 · fixed in 6.0.7

  • djangoPyPI

    fixed in 5.2.16

  • djangoPyPI

    From 6.0.0 · fixed in 6.0.7

References 3

docs.djangoproject.com

groups.google.com

djangoproject.com