CVE-2016-2513
Django User Enumeration Vulnerability
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
CVE-2016-2513- CVSS 3.0
- 3.1 Low
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - CVSS 2.0
- 2.6 Low
AV:N/AC:H/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
CVE-2016-2513- Updated
- 2026-11-02
EUVDEUVD-2016-0005 No score
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
EUVD-2016-0005- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fp6p-5xvw-m74f
Django User Enumeration Vulnerability
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
GHSA-fp6p-5xvw-m74f- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.0
- 3.1 Low
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
CVE-2016-2513- CVSS 3.0
- 3.1 Low
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2016-2513
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
DEBIAN-CVE-2016-2513- CVSS 3.0
- 3.1 Low
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
Show 6 moreShow less
OSVGHSA-fp6p-5xvw-m74f
Django User Enumeration Vulnerability
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
GHSA-fp6p-5xvw-m74f- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.0
- 3.1 Low
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-2513
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
UBUNTU-CVE-2016-2513- CVSS 3.0
- 3.1 Low
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVMGASA-2016-0096 No score
Updated python-django packages fix security vulnerability
Mark Striemer discovered that Django incorrectly handled user-supplied redirect URLs containing basic authentication credentials. A remote attacker could possibly use this issue to perform a cross-site scripting attack or a malicious redirect. (CVE-2016-2512)
Sjoerd Job Postmus discovered that Django incorrectly handled timing when doing password hashing operations. A remote attacker could possibly use this issue to perform user enumeration. (CVE-2016-2513)
- Record
MGASA-2016-0096- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10361-1 No score
python3-Django-1.10.4-1.1 on GA media
These are all security issues fixed in the python3-Django-1.10.4-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10361-1- Updated
- 2026-11-02
OSVPYSEC-2016-16 No score
The password hasher in contrib/auth/hashers.py in Django before 1.8.10 and 1.9.x before 1.9.3 allows remote attackers to enumerate users via a timing attack involving login requests.
- Record
PYSEC-2016-16- Updated
- 2026-11-02
OSVUSN-2915-1 No score
python-django vulnerabilities
Mark Striemer discovered that Django incorrectly handled user-supplied redirect URLs containing basic authentication credentials. A remote attacker could possibly use this issue to perform a cross-site scripting attack or a malicious redirect. (CVE-2016-2512)
Sjoerd Job Postmus discovered that Django incorrectly handled timing when doing password hashing operations. A remote attacker could possibly use this issue to perform user enumeration. (CVE-2016-2513)
- Record
USN-2915-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
djangoPyPI |
before 1.8.10 | 1.8.10 |
djangoPyPI |
1.9 up to 1.9.3 | 1.9.3 |
python-djangoDebian:12 |
before 1.9.4-1 | 1.9.4-1 |
python-djangoDebian:13 |
before 1.9.4-1 | 1.9.4-1 |
python-djangoDebian:14 |
before 1.9.4-1 | 1.9.4-1 |
python-djangoDebian:7 |
before 1.4.5-1+deb7u16, plus listed versions 1.4.5-11.4.5-1+deb7u11.4.5-1+deb7u101.4.5-1+deb7u111.4.5-1+deb7u11~bpo60+1 Show 17 moreShow less1.4.5-1+deb7u121.4.5-1+deb7u131.4.5-1+deb7u13~bpo60+11.4.5-1+deb7u141.4.5-1+deb7u14~bpo60+11.4.5-1+deb7u151.4.5-1+deb7u21.4.5-1+deb7u31.4.5-1+deb7u41.4.5-1+deb7u4~bpo60+11.4.5-1+deb7u51.4.5-1+deb7u61.4.5-1+deb7u71.4.5-1+deb7u7~bpo60+11.4.5-1+deb7u81.4.5-1+deb7u8~bpo60+11.4.5-1+deb7u9 |
1.4.5-1+deb7u16 |
python-djangoDebian:8 |
before 1.7.7-1+deb8u4, plus listed versions 1.7.7-11.7.7-1+deb8u11.7.7-1+deb8u21.7.7-1+deb8u3 |
1.7.7-1+deb8u4 |
djangoPyPI |
before 1.8.10, plus listed versions 1.0.11.0.21.0.31.0.41.1 Show 45 moreShow less1.1.11.1.21.1.31.1.41.21.2.11.2.21.2.31.2.41.2.51.2.61.2.71.31.3.11.3.21.3.31.3.41.3.51.3.61.3.71.41.4.11.4.101.4.111.4.121.4.131.4.141.4.151.4.161.4.171.4.181.4.191.4.21.4.201.4.211.4.221.4.31.4.41.4.51.4.61.4.71.4.81.4.91.51.5.1 |
1.8.10 |
djangoPyPI |
1.9 up to 1.9.3, plus listed versions 1.9.11.9.2 |
1.9.3 |
python-djangoMageia:5 |
before 1.8.10-1.mga5 | 1.8.10-1.mga5 |
Show 17 moreShow less
| Package | Affected | Fixed |
|---|---|---|
djangoPyPI |
before 1.8.10, 1.9 up to 1.9.3, plus listed versions 1.0.11.0.21.0.31.0.41.1 Show 45 moreShow less1.1.11.1.21.1.31.1.41.21.2.11.2.21.2.31.2.41.2.51.2.61.2.71.31.3.11.3.21.3.31.3.41.3.51.3.61.3.71.41.4.11.4.101.4.111.4.121.4.131.4.141.4.151.4.161.4.171.4.181.4.191.4.21.4.201.4.211.4.221.4.31.4.41.4.51.4.61.4.71.4.81.4.91.51.5.1 |
1.8.101.9.3 |
python-djangoRed Hat:openstack:5::el6 |
before 0:1.6.11-5.el6ost | 0:1.6.11-5.el6ost |
python-django-bash-completionRed Hat:openstack:5::el6 |
before 0:1.6.11-5.el6ost | 0:1.6.11-5.el6ost |
python-django-docRed Hat:openstack:5::el6 |
before 0:1.6.11-5.el6ost | 0:1.6.11-5.el6ost |
python-djangoRed Hat:openstack-optools:7::el7 |
before 0:1.6.11-5.el7ost | 0:1.6.11-5.el7ost |
python-django-bash-completionRed Hat:openstack-optools:7::el7 |
before 0:1.6.11-5.el7ost | 0:1.6.11-5.el7ost |
python-djangoRed Hat:openstack:7::el7 |
before 0:1.8.11-1.el7ost | 0:1.8.11-1.el7ost |
python-django-bash-completionRed Hat:openstack:7::el7 |
before 0:1.8.11-1.el7ost | 0:1.8.11-1.el7ost |
python-django-docRed Hat:openstack:7::el7 |
before 0:1.8.11-1.el7ost | 0:1.8.11-1.el7ost |
python-djangoRed Hat:openstack:6::el7 |
before 0:1.6.11-5.el7ost | 0:1.6.11-5.el7ost |
python-django-bash-completionRed Hat:openstack:6::el7 |
before 0:1.6.11-5.el7ost | 0:1.6.11-5.el7ost |
python-django-docRed Hat:openstack:6::el7 |
before 0:1.6.11-5.el7ost | 0:1.6.11-5.el7ost |
python-djangoRed Hat:openstack:5::el7 |
before 0:1.6.11-5.el7ost | 0:1.6.11-5.el7ost |
python-django-bash-completionRed Hat:openstack:5::el7 |
before 0:1.6.11-5.el7ost | 0:1.6.11-5.el7ost |
python-django-docRed Hat:openstack:5::el7 |
before 0:1.6.11-5.el7ost | 0:1.6.11-5.el7ost |
python-djangoUbuntu:14.04:LTS |
before 1.6.1-2ubuntu0.12, plus listed versions 1.5.4-1ubuntu11.6-11.6.1-11.6.1-21.6.1-2ubuntu0.1 Show 9 moreShow less1.6.1-2ubuntu0.21.6.1-2ubuntu0.31.6.1-2ubuntu0.41.6.1-2ubuntu0.51.6.1-2ubuntu0.61.6.1-2ubuntu0.81.6.1-2ubuntu0.91.6.1-2ubuntu0.101.6.1-2ubuntu0.11 |
1.6.1-2ubuntu0.12 |
python-DjangoopenSUSE:Tumbleweed |
before 1.10.4-1.1 | 1.10.4-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-2513 is a low vulnerability (CVSS 3.1) in Djangoproject Django, published March 1, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.35%, the 88th percentile. Fixed in django 1.8.10.
References
rhn.redhat.com/errata/RHSA-2016-0506.html
github.com/django/django/commit/67b46ba7016da2d259c1ecc7d666d11f5e1cfaab
securitytracker.com/id/1035152
debian.org/security/2016/dsa-3544
Show 42 moreShow less
ubuntu.com/usn/USN-2915-3
securityfocus.com/bid/83878
oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
djangoproject.com/weblog/2016/mar/01/security-releases
nvd.nist.gov/vuln/detail/CVE-2016-2513
web.archive.org/web/20160322001143/http://www.securitytracker.com/id/1035152
security-tracker.debian.org/tracker/CVE-2016-2513
advisories.mageia.org/MGASA-2016-0096.html
bugs.mageia.org/show_bug.cgi?id=17860
access.redhat.com/errata/RHSA-2016:0502
bugzilla.redhat.com/show_bug.cgi?id=1311431
security.access.redhat.com/data/csaf/v2/advisories/2016/rhsa-2016_0502.json
cve.org/CVERecord?id=CVE-2016-2512
ubuntu.com/security/CVE-2016-2513
suse.com/security/cve/CVE-2016-2512
Left out here: 102 versions. The JSON record has them.