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CVE-2011-4137

18
FAUCET Score

CVE-2011-4137 describes a denial-of-service vulnerability in Django versions prior to 1.2.7 and 1.3.1. The flaw resides in the URLField's verify_exists functionality, which lacks timeouts when accessing external URLs, allowing remote attackers to consume resources by providing slow, unresponsive, or data-intensive URLs. This vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and potential for partial denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2.6CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
0.91CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:0.91:*:*:*:*:*:*:*
0.95CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:0.95:*:*:*:*:*:*:*
0.95.1CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:0.95.1:*:*:*:*:*:*:*
0.96CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:0.96:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.02%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0302 is in the 80th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

pippatch availablevia ghsa
Product: DjangoFixed in: 1.2.7
pippatch availablevia ghsa
Product: DjangoFixed in: 1.3.1
redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

pipGHSA-3jqw-crqj-w8qwhigh

Denial of service in django

Jul 23, 2018

References

openwall.com / lists/oss-security/2011/09/11/1
Patch
openwall.com / lists/oss-security/2011/09/13/2
Patch
openwall.com / lists/oss-security/2011/09/15/5
bugzilla.redhat.com / show_bug.cgi
Patch
secunia.com / advisories/46614
hermes.opensuse.org / messages/14700881
djangoproject.com / weblog/2011/sep/09
PatchVendor Advisory
djangoproject.com / weblog/2011/sep/10/127
Patch
debian.org / security/2011/dsa-2332