GHSA-7qfw-j7hp-v45g CVE-2015-0219 PYSEC-2015-4

Django WSGI Header Spoofing Vulnerability

Medium PyPI

Severity: 0.0 / 10; Medium · CVSS 4.0
Exploit chance (EPSS): 6.97%; Chance of exploitation in the next 30 days. Higher than 94.13% of scored vulnerabilities.
Known exploited: No; Not in CISA's catalog
Weakness: CWE-290 Authentication Bypass by Spoofing
Fix: 1.4.18; Upgrade django to this version or later

Description

Django before 1.4.18, 1.6.x before 1.6.10, and 1.7.x before 1.7.3 allows remote attackers to spoof WSGI headers by using an _ (underscore) character instead of a - (dash) character in an HTTP header, as demonstrated by an X-Auth_User header.

Affected versions

PyPI

Package	Vulnerable	Fixed in
django	`< 1.4.18`	`1.4.18`
django	`>= 1.6, < 1.6.10`	`1.6.10`
django	`>= 1.7, < 1.7.3`	`1.7.3`
django	`< 1.4.18` `>= 1.5, < 1.6.10` `>= 1.7, < 1.7.3`	`1.4.18` `1.6.10` `1.7.3`

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

django PyPI → `1.4.18`

pip

pip install --upgrade "django>=1.4.18"

poetry

poetry add "django>=1.4.18"

uv

uv add "django>=1.4.18"

Severity breakdown

CVSS 4.0 0.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Attack vector: Network
Attack complexity: Low
Attack requirements: None
Privileges required: None
User interaction: None
Confidentiality (vulnerable system): None
Integrity (vulnerable system): Low
Availability (vulnerable system): None
Confidentiality (subsequent systems): None
Integrity (subsequent systems): None
Availability (subsequent systems): None

CVSS 3.1 5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: None

Weakness

CWE-290: Authentication Bypass by Spoofing

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

References

Advisories

Write-ups

djangoproject.com/weblog/2015/jan/13/security

Packages

github.com/django/django

Timeline

Jan 16, 2015 Published
Jun 10, 2026 Last updated by the source
Nov 1, 2026 Latest EPSS score

Advisory	Severity	Why it's related
GHSA-q238-5cxm-5c9h Django GeoDjango vulnerable to denial of service through deeply nested geometry collections	Medium	Also affects django
GHSA-wvqv-fj8w-qmhm Django GeoDjango spatial lookups allow file writes and outbound requests through GDAL raster parsing	High	Also affects django
GHSA-8qcx-xf44-272x Django: DomainNameValidator permits newline characters that may enable HTTP header injection	Medium	Also affects django
GHSA-crhf-3pfg-w68w Django: GDALRaster may over-read heap memory when constructed from bytes	Medium	Also affects django
GHSA-3h9f-r86x-qvjx Django: cache middleware may expose private responses when unrelated request cookies are present	Medium	Also affects django
GHSA-8cjm-8mp7-r2xf Django: UpdateCacheMiddleware may disclose cached responses due to case-sensitive Cache-Control handling	Medium	Also affects django
GHSA-mm6v-q8q9-pgcf Django fails to prevent reuse of a partially-initialized connection after a failed `STARTTLS` handshake	Low	Also affects django
GHSA-h7pc-vwp9-298g Django: signed cookies are vulnerable to salt namespace collisions	Medium	Also affects django

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