CVE-2026-3902

Published Apr 7, 2026

Last updated 2 days ago

Overview

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.
Source
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
NVD status
Analyzed
Products
django

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.5
Impact score
3.6
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity
HIGH

Weaknesses

6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
CWE-290

Social media

Hype score
Not currently trending

Configurations