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CVE-2023-31047 — Vulnerability in django — CVE Details

CRITICAL

Django bypasses validation when using one form field to upload multiple files

Published May 7, 2023Updated February 21, 2025Source: osv

What Should I Do?

Address in Next Maintenance Window

Low exploitation probability (0.11%). Schedule for your next planned update.

Summary

In Django 3.2 before 3.2.19, 4.x before 4.1.9, and 4.2 before 4.2.1, it was possible to bypass validation when using one form field to upload multiple files. This multiple upload has never been supported by forms.FileField or forms.ImageField (only the last uploaded file was validated). However, Django's "Uploading multiple files" documentation suggested otherwise.

Advisory Timeline

  • First published May 7, 2023 (1254 days ago).
  • Last revised February 21, 2025 — 656 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip
Update django to 4.2.1 or later
pip install "django>=4.2.1"
pip
Update django to 4.1.9 or later
pip install "django>=4.1.9"
pip
Update django to 3.2.19 or later
pip install "django>=3.2.19"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

Affects 1 ecosystem: pypi (1).

PackageEcosystemAffectedFixed In
django
pypi
4.2, 4.2a1, 4.2b1, 4.2rc14.2.1
django
pypi
4.0, 4.0.1, 4.0.10, 4.0.2 (+22 more)4.1.9
django
pypi
3.2, 3.2.1, 3.2.10, 3.2.11 (+18 more)3.2.19

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-20
    Improper Input ValidationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2023-31047?
Django bypasses validation when using one form field to upload multiple files This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2023-31047?
CVE-2023-31047 affects django. It has a 0.1% probability of exploitation within 30 days (EPSS score). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2023-31047 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

EPSS Score (30-day exploit probability)
0.11%
Higher than 29% of vulnerabilities

This is a below-median EPSS score — only 28.7% of tracked vulnerabilities score at or below it, so most tracked vulnerabilities are considered more likely to be exploited than this one.

Also Known As

GHSA-r3xc-prgr-mg9p
BIT-django-2023-31047
PYSEC-2023-61

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