What’s Vulnerable › Vulnerabilities

CVE-2021-45116: Information disclosure in Django

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-05 · updated 2026-06-17
• Weakness: CWE-20

Description

An issue was discovered in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1. Due to leveraging the Django Template Language's variable resolution logic, the dictsort template filter was potentially vulnerable to information disclosure, or an unintended method call, if passed a suitably crafted key.

Affected products

• Django: from 2.2 before 2.2.26; from 3.2 before 3.2.11; from 4.0 before 4.0.1 — fixed in 2.2.26, 3.2.11, 4.0.1
• Fedoraproject Fedora: 35
• Pypi Django: from 2.2 before 2.2.26; from 3.2 before 3.2.11; from 4.0 before 4.0.1; 2.2, 2.2.1, 2.2.10, 2.2.11, 2.2.12, 2.2.13 (+32) — fixed in 2.2.26, 3.2.11, 4.0.1

How to fix

Upgrade to a fixed version: Django 2.2.26, 3.2.11, 4.0.1; Pypi Django 2.2.26, 3.2.11, 4.0.1. Check the vendor advisory for mitigations.

References

• https://docs.djangoproject.com/en/4.0/releases/security/
• https://groups.google.com/forum/#%21forum/django-announce
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
• https://security.netapp.com/advisory/ntap-20220121-0005/
• https://www.djangoproject.com/weblog/2022/jan/04/security-releases/
• https://docs.djangoproject.com/en/4.0/releases/security/
• https://groups.google.com/forum/#%21forum/django-announce
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
• https://security.netapp.com/advisory/ntap-20220121-0005/
• https://www.djangoproject.com/weblog/2022/jan/04/security-releases/

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