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Django CVE-2015-5144

MEDIUM
Improper Input Validation (CWE-20)
2015-07-14 cve@mitre.org
Python Code Injection Debian Oracle Django Canonical Debian Linux Solaris Ubuntu Linux Djangoproject
4.3
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-20
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 2.24%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 2.2% exploitation probability (EPSS)

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AnalysisAI

Django before 1.4.21, 1.5.x through 1.6.x, 1.7.x before 1.7.9, and 1.8.x before 1.8.3 uses an incorrect regular expression, which allows remote attackers to inject arbitrary headers and conduct HTTP. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

pypi django fix: 1.4.21, 1.7.9, 1.8.3

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in pypi

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Technical ContextAI · show details

This vulnerability is classified under CWE-20. Django before 1.4.21, 1.5.x through 1.6.x, 1.7.x before 1.7.9, and 1.8.x before 1.8.3 uses an incorrect regular expression, which allows remote attackers to inject arbitrary headers and conduct HTTP response splitting attacks via a newline character in an (1) email message to the EmailValidator, a (2) URL to the URLValidator, or unspecified vectors to the (3) validate_ipv4_address or (4) validate_slug validator. Affected products include: Canonical Ubuntu Linux, Djangoproject Django, Debian Debian Linux, Oracle Solaris. Version information: before 1.4.21.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
None
Integrity
P
Availability
None

DescriptionCVE.org

Django before 1.4.21, 1.5.x through 1.6.x, 1.7.x before 1.7.9, and 1.8.x before 1.8.3 uses an incorrect regular expression, which allows remote attackers to inject arbitrary headers and conduct HTTP response splitting attacks via a newline character in an (1) email message to the EmailValidator, a (2) URL to the URLValidator, or unspecified vectors to the (3) validate_ipv4_address or (4) validate_slug validator.

Threat Intelligence Overview

EPSS Score
2.2%
Top 15% exploitable
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 2.2%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Affected Products (CPE)CVE.org

cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5:alpha:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5:beta:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.4:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.5:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.6:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.7:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.8:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.9:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.10:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.11:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:django:1.5.12:*:*:*:*:*:*:*
+ 38 more

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References

Advisories & patches
ADVISORY https://www.djangoproject.com/weblog/2015/jul/08/security-releases/ REF http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172084.html REF http://lists.opensuse.org/opensuse-updates/2015-10/msg00043.html REF http://lists.opensuse.org/opensuse-updates/2015-10/msg00046.html REF http://www.debian.org/security/2015/dsa-3305 REF http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html REF http://www.securityfocus.com/bid/75665 REF http://www.securitytracker.com/id/1032820 REF http://www.ubuntu.com/usn/USN-2671-1 REF https://security.gentoo.org/glsa/201510-06

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