CVE-2025-13473

Username enumeration through timing difference in mod_wsgi authentication handler

State: Published
Severity: 5.3 Medium
Published: Feb 3, 2026
Updated: Feb 3, 2026
Reserved: Nov 20, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-208 Observable Timing Discrepancy

Affected Products

Product	Versions
Djangodjangoproject	6.0 to before 6.0.2Affected 6.0.2Not affected 5.2 to before 5.2.11Affected 5.2.11Not affected 4.2 to before 4.2.28Affected 4.2.28Not affected

References

Django security archivevendor-advisory
Django releases announcementsmailing-list
Django security releases issued: 6.0.2, 5.2.11, and 4.2.28vendor-advisory

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