NVD Vulnerability Detail
Search Exploit, PoC
CVE-2026-3902
Summary

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.

Publication Date April 8, 2026, 12:17 a.m.
Registration Date April 15, 2026, 11:28 a.m.
Last Update April 14, 2026, 2:38 a.m.
CVSS3.1 : HIGH
スコア 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C) なし
完全性への影響(I)
可用性への影響(A) なし
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* 4.2 4.2.30
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* 5.2 5.2.13
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* 6.0 6.0.4
Related information, measures and tools
Common Vulnerabilities List