CVE-2009-3695
HIGH7.5EPSS 6.2%python-django - denial of service
Published: 5/2/2022Modified: 4/28/2026
Description
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.
Affected packages (4)
- Debian/python-djangofrom 0, < 1.1.1-1
- Debian/python-djangofrom 0, < 1.0.2-1+lenny2
- PyPI/django>= 1.0, < 1.0.4
- PyPI/django>= 1.0, < 1.0.4, >= 1.1, < 1.1.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (21)
- ADVISORYhttp://secunia.com/advisories/36948
- ADVISORYhttp://secunia.com/advisories/36968
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2009-3695
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2009-3695
- ADVISORYhttp://www.djangoproject.com/weblog/2009/oct/09/security/
- ADVISORYhttp://www.vupen.com/english/advisories/2009/2871
- PATCHhttps://github.com/django/django
- WEBhttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457
- WEBhttp://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51
- WEBhttp://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51/
- WEBhttps://exchange.xforce.ibmcloud.com/vulnerabilities/53727
- WEBhttps://github.com/django/django/commit/594a28a9044120bed58671dde8a805c9e0f6c79a
- WEBhttps://github.com/django/django/commit/e3e992e18b368fcd56aabafc1b5bf80a6e11b495
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2009-4.yaml
- WEBhttps://web.archive.org/web/20091013093057/http://secunia.com/advisories/36968
- WEBhttps://web.archive.org/web/20091017070244/http://secunia.com/advisories/36948
- WEBhttps://web.archive.org/web/20200228171918/http://www.securityfocus.com/bid/36655
- WEBhttp://www.debian.org/security/2009/dsa-1905
- WEBhttp://www.djangoproject.com/weblog/2009/oct/09/security
- WEBhttp://www.openwall.com/lists/oss-security/2009/10/13/6
- WEBhttp://www.securityfocus.com/bid/36655