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CVE-2016-2513

15
FAUCET Score

CVE-2016-2513 is a timing attack vulnerability in the password hasher of Django versions prior to 1.8.10 and 1.9.3. This flaw allows remote attackers to enumerate valid usernames through carefully timed login attempts. The vulnerability has a low CVSS score of 3.1, indicating a low severity with a network attack vector and high attack complexity, potentially leading to limited information disclosure. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.9CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.8.9:*:*:*:*:*:*:*
1.9CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.9:*:*:*:*:*:*:*
1.9.1CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.9.1:*:*:*:*:*:*:*
1.9.2CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:1.9.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

3.1LOW

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.32%
Probability of exploitation in next 30 days
EPSS Percentile
87.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0332 is in the 88th percentile among its peer group of 232 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (10)

pippatch availablevia ghsa
Product: djangoFixed in: 1.8.10
pippatch availablevia ghsa
Product: djangoFixed in: 1.9.3
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7Fixed in: python-django-0:1.6.11-5.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7Fixed in: python-django-0:1.6.11-5.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7.0 Operational Tools for RHEL 7Fixed in: python-django-0:1.6.11-5.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7Fixed in: python-django-0:1.8.11-1.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6Fixed in: python-django-0:1.6.11-5.el6ost
View patch
redhatno patchvia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: Django
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 1.2Fixed in: Django
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 1.3Fixed in: Django

Vendor Advisories (2)

pipGHSA-fp6p-5xvw-m74flow

Django User Enumeration Vulnerability

May 17, 2022
redhatCVE-2016-2513Moderate

python-django: User enumeration through timing difference on password hasher work factor upgrade

Mar 1, 2016

References

rhn.redhat.com / errata/RHSA-2016-0502.html
rhn.redhat.com / errata/RHSA-2016-0504.html
rhn.redhat.com / errata/RHSA-2016-0505.html
rhn.redhat.com / errata/RHSA-2016-0506.html
github.com / django/django/commit/67b46ba7016da2d259c1ecc7d666d11f5e1cfaab
djangoproject.com / weblog/2016/mar/01/security-releases
Vendor Advisory
debian.org / security/2016/dsa-3544
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
securityfocus.com / bid/83878
securitytracker.com / id/1035152
ubuntu.com / usn/USN-2915-1
ubuntu.com / usn/USN-2915-2
ubuntu.com / usn/USN-2915-3