CVE-2009-3695
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…
- 5.0MediumCVSS base score
- 3.8%Exploitation in 30 daysEPSS · top 9.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 3.8% · top 9.9% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIDjangoGHSA-p6m5-h7pp-v2x5 (opens in a new tab)
References
References10
- 36655 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- django-emailfield-urlfield-dos(53727) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://www.djangoproject.com/weblog/2009/oct/09/security/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- 36948 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 36968 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-1905 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- http://groups.google.com/group/django-users/browse_thread/thread/15df9e45118dfc51/ (opens in a new tab)x_refsource_MISCx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550457 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20091013 Re: Duplicate CVE assignment notification [was: CVE id request: django] (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- ADV-2009-2871 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-0004 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-p6m5-h7pp-v2x5 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-3695)Record last updated .