Session manipulation in Django
django.contrib.sessions in Django before 1.2.7 and 1.3.x before 1.3.1, when session data is stored in the cache, uses the root namespace for both session identifiers and application-data keys, which allows remote attackers to modify a session by triggering use of a key that is equal to that session's identifier.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | django | < 1.2.7, >= 1.3, < 1.3.1 | 1.2.7, 1.3.1 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=737366
- http://openwall.com/lists/oss-security/2011/09/13/2
- https://www.djangoproject.com/weblog/2011/sep/09/
- https://www.djangoproject.com/weblog/2011/sep/10/127/
- http://openwall.com/lists/oss-security/2011/09/11/1
- http://secunia.com/advisories/46614
- http://www.debian.org/security/2011/dsa-2332
- https://hermes.opensuse.org/messages/14700881
- https://github.com/advisories/GHSA-x88j-93vc-wpmp
- https://nvd.nist.gov/vuln/detail/CVE-2011-4136
- https://github.com/django/django/commit/ac7c3a110f906e4dfed3a17451bf7fd9fcb81296
- https://github.com/django/django/commit/fbe2eead2fa9d808658ca582241bcacb02618840
- https://github.com/django/django
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2011-1.yaml
- https://www.djangoproject.com/weblog/2011/sep/09
- https://www.djangoproject.com/weblog/2011/sep/10/127
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-20- Platform
- Python (PyPI)
- Package
django- Disclosed
- 19.10.2011
- Updated
- 11.10.2026 11:20
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2011-1 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-x88j-93vc-wpmp - CC BY 4.0
Vulnerability history: django
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 162
- First → latest
- 10.2007 08.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Critical 16
- High 65
- Medium 63
- Low 18
Disclosures per year
- 2017: 3
- 2018: 5
- 2019: 11
- 2020: 6
- 2021: 8
- 2022: 14
- 2023: 7
- 2024: 14
- 2025: 12
- 2026: 26
earlier: 56
-
Session manipulation in Django this entry
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