CVE-2025-13473 — Username enumeration through timing difference in mod_wsgi authentication handler

Affected: djangoproject Django

An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. The `django.contrib.auth.handlers.modwsgi.check_password()` function for authentication via `mod_wsgi` allows remote attackers to enumerate users via a timing attack. 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 Stackered for reporting this issue.

USN-8009-1 — python-django vulnerabilities

Affected: Ubuntu:Pro:14.04:LTS: python-django, Ubuntu:Pro:16.04:LTS: python-django, Ubuntu:Pro:18.04:LTS: python-django, Ubuntu:Pro:20.04:LTS: python-django, Ubuntu:22.04:LTS: python-django, Ubuntu:24.04:LTS: python-django, Ubuntu:25.10: python-django

It was discovered that Django exposed timing information when checking passwords. An attacker could possibly use this issue to obtain sensitive information. (CVE-2025-13473)

Jiyong Yang discovered that Django incorrectly handled malformed requests with duplicate headers. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 25.10. (CVE-2025-14550)

Tarek Nakkouch discovered that Django incorrectly parsed raster lookups. An attacker could possibly use this issue to perform SQL injection attacks. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 25.10. (CVE-2026-1207)

Seokchan Yoon discovered that Django incorrectly handled malformed HTML inputs containing a large amount of unmatched HTML end tags. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 25.10. (CVE-2026-1285)

Solomon Kebede discovered that Django incorrectly handled control characters in the dictionary expansion of certain QuerySet methods. An attacker could possibly use this issue to perform SQL injection attacks. (CVE-2026-1287)

Solomon Kebede discovered that Django incorrectly handled column alias parsing with dictionary expansion. An attacker could possibly use this issue to perform SQL injection attacks. This issue o…

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CVE-2025-13473 — Username enumeration through timing difference in mod_wsgi authentication handler

USN-8009-1 — python-django vulnerabilities