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MEDIUM severity

CVE-2013-0306 — django

MEDIUMFix: django/django@0cc350a

CVE-2013-0306 is a medium-severity (CVSS 5.3) CWE-189 vulnerability in django. A fix is available for django — see the affected versions and patch details below.

Django is vulnerable to Denial of Service attack in formset

Also known asGHSA-g8xg-jgj6-49r3PYSEC-2013-17
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.6%probability of exploitation in next 30 days
Lower Risk+0.05%
Lower risk than most CVEs86th percentile — riskier than 86% of all scored CVEsHighest risk
0.00%1.13%2.25%3.38%0.2%2.6%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected
🐍django🐍django

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

The form library in Django 1.3.x before 1.3.6, 1.4.x before 1.4.4, and 1.5 before release candidate 2 allows remote attackers to bypass intended resource limits for formsets and cause a denial of service (memory consumption) or trigger server errors via a modified max_num parameter.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIdjango≥ 1.3&&< 1.3.61.3.6pip install --upgrade 'django==1.3.6'
🐍PyPIdjango≥ 1.4&&< 1.4.41.4.4pip install --upgrade 'django==1.4.4'

Affected Products

2 products · 17 configurations
OS
ubuntu linuxcanonical
4 versions
10.0411.1012.0412.10
Application
djangodjangoproject
8 versions
1.31.3.11.3.21.3.31.41.4.11.4.21.5

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for django, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update django to 1.3.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2013-0306 is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate
ProductFixed inAdvisory
OpenStack Folsom for RHEL 6Django14-0:1.4.4-1.el6ostRHSA-2013:0670

Frequently Asked Questions

The form library in Django 1.3.x before 1.3.6, 1.4.x before 1.4.4, and 1.5 before release candidate 2 allows remote attackers to bypass intended resource limits for formsets and cause a denial of service (memory consumption) or trigger server errors via a modified max_num parameter.
O3 Security · Impact-Aware SCA

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CVE-2013-0306: django DoS — Fixed in 1.3.6