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CVE-2021-3281 — Vulnerability in django — CVE Details

MEDIUM

Django Directory Traversal via archive.extract

Published March 18, 2021Updated September 20, 2024Source: osv

What Should I Do?

Fix Within 2-4 Weeks

Moderate exploitation risk (36.23% probability in 30 days). Schedule remediation soon.

Summary

In Django 2.2 before 2.2.18, 3.0 before 3.0.12, and 3.1 before 3.1.6, the django.utils.archive.extract method (used by "startapp --template" and "startproject --template") allows directory traversal via an archive with absolute paths or relative paths with dot segments.

Advisory Timeline

  • First published March 18, 2021 (2034 days ago).
  • Last revised September 20, 2024 — 1282 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip
Update django to 2.2.18 or later
pip install "django>=2.2.18"
pip
Update django to 3.1.6 or later
pip install "django>=3.1.6"
pip
Update django to 3.0.12 or later
pip install "django>=3.0.12"

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
2.2, 2.2.1, 2.2.10, 2.2.11 (+14 more)2.2.18
django
pypi
3.1, 3.1.1, 3.1.2, 3.1.3 (+2 more)3.1.6
django
pypi
3.0, 3.0.1, 3.0.10, 3.0.11 (+8 more)3.0.12

Vulnerability Classification

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

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 5.3 score means for each attack dimension.

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

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

References

Frequently Asked Questions

What is CVE-2021-3281?
Django Directory Traversal via archive.extract This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 5.3/10).
How do I check if my project is affected by CVE-2021-3281?
CVE-2021-3281 affects django. It has a 36.2% probability of exploitation within 30 days (EPSS score). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-3281 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
5.3

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

EPSS Score (30-day exploit probability)
36.23%
Higher than 97% of vulnerabilities

This places it in the top 5% of EPSS-scored vulnerabilities — 97% of tracked vulnerabilities score at or below it, so it is far more likely to be exploited than nearly all other tracked vulnerabilities.

Also Known As

GHSA-fvgf-6h6h-3322
BIT-django-2021-3281
PYSEC-2021-9

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