CVE Vulnerabilities

CVE-2026-3902

Authentication Bypass by Spoofing

Published: Apr 07, 2026 | Modified: Apr 13, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Ubuntu
LOW
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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.

Weakness

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

Affected Software

NameVendorStart VersionEnd Version
DjangoDjangoproject4.2 (including)4.2.30 (excluding)
DjangoDjangoproject5.2 (including)5.2.13 (excluding)
DjangoDjangoproject6.0 (including)6.0.4 (excluding)
Python-djangoUbuntudevel*
Python-djangoUbuntujammy*
Python-djangoUbuntunoble*
Python-djangoUbuntuquesting*
Python-djangoUbuntuupstream*

References