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CVE-2015-5143

24
FAUCET Score

CVE-2015-5143 describes a denial-of-service vulnerability affecting Django versions prior to 1.4.21, 1.6.x, 1.7.9, and 1.8.3, where remote attackers can exhaust session store resources by sending numerous requests with unique session keys. This vulnerability has a CVSS score of 7.8, indicating high severity, and allows unauthenticated attackers to cause a complete loss of availability with low attack complexity. While the EPSS score is low, suggesting a low probability of exploitation, there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.20CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.4.20:*:*:*:*:*:*:*
1.5CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.5:*:*:*:*:*:*:*
1.5CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.5:alpha:*:*:*:*:*:*
1.5CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.5:beta:*:*:*:*:*:*
1.5.1CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.5.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.27%
Probability of exploitation in next 30 days
EPSS Percentile
93.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0727 is in the 89th percentile among its peer group of 51,553 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

pippatch availablevia ghsa
Product: djangoFixed in: 1.4.21
pippatch availablevia ghsa
Product: DjangoFixed in: 1.7.9
pippatch availablevia ghsa
Product: DjangoFixed in: 1.8.3
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6Fixed in: python-django-0:1.6.11-1.el6ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7Fixed in: python-django-0:1.6.11-2.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7Fixed in: python-django-0:1.6.11-2.el7ost
View patch
redhatend of lifevia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: Django

Vendor Advisories (2)

pipGHSA-h582-2pch-3xv3high

Django Denial-of-service by filling session store

Jul 5, 2019
redhatCVE-2015-5143Moderate

Django: possible DoS by filling session store

Jul 8, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-November/172084.html
lists.opensuse.org / opensuse-updates/2015-10/msg00043.html
lists.opensuse.org / opensuse-updates/2015-10/msg00046.html
rhn.redhat.com / errata/RHSA-2015-1678.html
rhn.redhat.com / errata/RHSA-2015-1686.html
security.gentoo.org / glsa/201510-06
djangoproject.com / weblog/2015/jul/08/security-releases
PatchVendor Advisory
debian.org / security/2015/dsa-3305
Third Party Advisory
oracle.com / technetwork/topics/security/bulletinoct2015-2511968.html
Third Party Advisory
securityfocus.com / bid/75666
securitytracker.com / id/1032820
ubuntu.com / usn/USN-2671-1
Third Party Advisory