CVE-2011-4137
The verify_exists functionality in the URLField implementation in Django before 1.2.7 and 1.3.x before 1.3.1 relies on Python libraries that attempt access to an arbitrary URL with no timeout, which allows remote attackers to cause a denial of service (resource consumption) via a URL associated with (1) a slow response, (2) a completed TCP connection with no application data sent, or (3) a large amount of application data, a related issue to CVE-2011-1521.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-399
- EPSS score
- 3.0% (88th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-0007)
- Published
- October 19, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-0007 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
- djangoproject / django
References
- http://openwall.com/lists/oss-security/2011/09/11/1(Patch)
- http://openwall.com/lists/oss-security/2011/09/13/2(Patch)
- http://openwall.com/lists/oss-security/2011/09/15/5
- http://secunia.com/advisories/46614
- http://www.debian.org/security/2011/dsa-2332
- https://bugzilla.redhat.com/show_bug.cgi?id=737366(Patch)
- https://hermes.opensuse.org/messages/14700881
- https://www.djangoproject.com/weblog/2011/sep/09/(Patch, Vendor Advisory)
- https://www.djangoproject.com/weblog/2011/sep/10/127/(Patch)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain