CVE-2009-3695
MEDIUM · CVSS 5.0EPSS 3.8%EU EUVD
Algorithmic complexity vulnerability in the forms library in Django 1.0 before 1.0.4 and 1.1 before 1.1.1 allows remote attackers to cause a denial of service (CPU consumption) via a crafted (1) EmailField (email address) or (2) URLField (URL) that triggers a large amount of backtracking in a regular expression.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- EPSS score
- 3.8% (90th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-0004)
- Published
- October 13, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0004 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- djangoproject / django
- djangoproject / django
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457
- http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51/
- http://secunia.com/advisories/36948(Vendor Advisory)
- http://secunia.com/advisories/36968(Vendor Advisory)
- http://www.debian.org/security/2009/dsa-1905
- http://www.djangoproject.com/weblog/2009/oct/09/security/(Patch, Vendor Advisory)
- http://www.openwall.com/lists/oss-security/2009/10/13/6
- http://www.securityfocus.com/bid/36655(Patch)
- http://www.vupen.com/english/advisories/2009/2871(Patch, Vendor Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53727
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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