CVE-2026-3902

7.5 HIGH
Published: April 07, 2026 Modified: April 13, 2026
View on NVD

Description

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants (with hyphens or with underscores) to a single version with underscores. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Tarek Nakkouch for reporting this issue.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://docs.djangoproject.com/en/dev/releases/security/
Source: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
Patch Vendor Advisory
https://groups.google.com/g/django-announce
Source: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
Release Notes
https://www.djangoproject.com/weblog/2026/apr/07/security-releases/
Source: 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
Patch Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.0%
15th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

djangoproject