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Fencer Intel
high 7.5

CVE-2011-4139 json

Django Vulnerable to Cache Poisoning

published 2011-10-19 15 y ago modified 2026-06-16 4 mo ago also GHSA-rm2j-x595-q9cj , PYSEC-2011-4 , EUVD-2011-0009

cvss
7.5
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

Django before 1.2.7 and 1.3.x before 1.3.1 uses a request's HTTP Host header to construct a full URL in certain circumstances, which allows remote attackers to conduct cache poisoning attacks via a crafted request.

Patch / fix

  • pypi django 1.2.7, 1.3.1
  • python-django Debian 14, Debian 13, Debian 12 1.3.1-1

debian advisories DEBIAN-CVE-2011-4139

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-4139 updated cvss 4.3

Django: v1.3.1, v1.2.7 multiple security flaws

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.37% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
pypi django
<1.2.7
>=1.3, <1.3.1
1.2.7
1.3.1

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.