Vulnerability advisory

GHSA-2mcm-79hx-8fxw

Django has Observable Timing Discrepancy

Published Feb 3, 2026Updated Sep 10, 2026OSV record ↗

Also known as BIT-django-2025-13473CVE-2025-13473PYSEC-2026-42

Severity

CVSS 4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U

Affected versions

django PyPI

All django advisories →

Affected	Fixed in
`6.0a1` to before 6.0.2	`6.0.2`Advisories →
Also listed as affected (5) `6.0` `6.0.1` `6.0a1` `6.0b1` `6.0rc1`
`5.2a1` to before 5.2.11	`5.2.11`Advisories →
Also listed as affected (14) `5.2` `5.2.1` `5.2.10` `5.2.2` `5.2.3` `5.2.4` `5.2.5` `5.2.6` `5.2.7` `5.2.8` `5.2.9` `5.2a1` `5.2b1` `5.2rc1`
`4.2a1` to before 4.2.28	`4.2.28`Advisories →
Also listed as affected (31) `4.2` `4.2.1` `4.2.10` `4.2.11` `4.2.12` `4.2.13` `4.2.14` `4.2.15` `4.2.16` `4.2.17` `4.2.18` `4.2.19` `4.2.2` `4.2.20` `4.2.21` `4.2.22` `4.2.23` `4.2.24` `4.2.25` `4.2.26` `4.2.27` `4.2.3` `4.2.4` `4.2.5` `4.2.6` `4.2.7` `4.2.8` `4.2.9` `4.2a1` `4.2b1` `4.2rc1`

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.

GHSA-2mcm-79hx-8fxw

Affected versions

django PyPI

Description

References