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.

INFO

Published Date :

2026-04-07T14:22:07.190Z

Last Modified :

2026-04-07T16:14:07.198Z

Source :

DSF
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3902 vulnerability.

No data.

REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3902.

URL Resource
https://docs.djangoproject.com/en/dev/releases/security/ cve-icon cve-icon cve-icon
https://github.com/django/django/commit/caf90a971f09323775ed0cacf94eadaf39d040e0 cve-icon
https://groups.google.com/g/django-announce cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-3902 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-3902 cve-icon
https://www.djangoproject.com/weblog/2026/apr/07/security-releases/ cve-icon cve-icon cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact