What’s Vulnerable › Vulnerabilities

CVE-2021-28658

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-06 · updated 2026-06-17
• Weakness: CWE-22

Description

In Django 2.2 before 2.2.20, 3.0 before 3.0.14, and 3.1 before 3.1.8, MultiPartParser allowed directory traversal via uploaded files with suitably crafted file names. Built-in upload handlers were not affected by this vulnerability.

Affected products

• Debian Linux: 9.0
• Django: from 2.2 before 2.2.20; from 3.0 before 3.0.14; from 3.1 before 3.1.8 — fixed in 2.2.20, 3.0.14, 3.1.8
• Fedoraproject Fedora: 34

How to fix

Upgrade to a fixed version: Django 2.2.20, 3.0.14, 3.1.8. Check the vendor advisory for mitigations.

References

• https://docs.djangoproject.com/en/3.1/releases/security/
• https://groups.google.com/g/django-announce/c/ePr5j-ngdPU
• https://lists.debian.org/debian-lts-announce/2021/04/msg00008.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVKYPHR3TKR2ESWXBPOJEKRO2OSJRZUE/
• https://security.netapp.com/advisory/ntap-20210528-0001/
• https://www.djangoproject.com/weblog/2021/apr/06/security-releases/
• https://docs.djangoproject.com/en/3.1/releases/security/
• https://groups.google.com/g/django-announce/c/ePr5j-ngdPU
• https://lists.debian.org/debian-lts-announce/2021/04/msg00008.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZVKYPHR3TKR2ESWXBPOJEKRO2OSJRZUE/
• https://security.netapp.com/advisory/ntap-20210528-0001/
• https://www.djangoproject.com/weblog/2021/apr/06/security-releases/

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