---
id: CVE-2025-13473
aliases:
  - GHSA-2mcm-79hx-8fxw
  - BIT-django-2025-13473
  - PYSEC-2026-42
title: Django has Observable Timing Discrepancy
summary: Django has Observable Timing Discrepancy
severity: low
vendor: django
product: django
ecosystem: pip
affected:
  - 'django >= 6.0a1, < 6.0.2'
  - 'django >= 5.2a1, < 5.2.11'
  - 'django >= 4.2a1, < 4.2.28'
patched:
  - django 6.0.2
  - django 5.2.11
  - django 4.2.28
published: '2026-02-03'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:33.805951644Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-2mcm-79hx-8fxw'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13473'
  - url: 'https://docs.djangoproject.com/en/dev/releases/security'
  - url: 'https://github.com/django/django'
  - url: >-
      https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-42.yaml
  - url: 'https://groups.google.com/g/django-announce'
  - url: 'https://www.djangoproject.com/weblog/2026/feb/03/security-releases'
tags:
  - osv
  - pip
epss: 0.00758
epssPercentile: 0.53284
ingestedAt: '2026-09-12T03:13:01.638Z'
---

## Overview

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.

## Affected packages

- `django >= 6.0a1, < 6.0.2`
- `django >= 5.2a1, < 5.2.11`
- `django >= 4.2a1, < 4.2.28`

## Remediation

Upgrade to a patched release:

- `django 6.0.2`
- `django 5.2.11`
- `django 4.2.28`