GHSA-mvfq-ggxm-9mc5

Suggest an improvement
Source
https://github.com/advisories/GHSA-mvfq-ggxm-9mc5
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mvfq-ggxm-9mc5/GHSA-mvfq-ggxm-9mc5.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-mvfq-ggxm-9mc5
Aliases
  • CVE-2026-3902
Downstream
Related
Published
2026-04-07T15:30:52Z
Modified
2026-04-10T00:29:20.166590171Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
Django vulnerable to ASGI header spoofing via underscore/hyphen conflation
Details

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.

Database specific 
{
    "github_reviewed_at": "2026-04-08T15:39:55Z",
    "severity": "HIGH",
    "github_reviewed": true,
    "nvd_published_at": "2026-04-07T15:17:46Z",
    "cwe_ids": [
        "CWE-290"
    ]
}
References

Affected packages

PyPI / django

Package

Name
django
View open source insights on deps.dev
Purl
pkg:pypi/django

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0
Fixed
6.0.4

Affected versions

6.*
6.0
6.0.1
6.0.2
6.0.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mvfq-ggxm-9mc5/GHSA-mvfq-ggxm-9mc5.json"

PyPI / django

Package

Name
django
View open source insights on deps.dev
Purl
pkg:pypi/django

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.2
Fixed
5.2.13

Affected versions

5.*
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
5.2.10
5.2.11
5.2.12

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mvfq-ggxm-9mc5/GHSA-mvfq-ggxm-9mc5.json"

PyPI / django

Package

Name
django
View open source insights on deps.dev
Purl
pkg:pypi/django

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.2
Fixed
4.2.30

Affected versions

4.*
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
4.2.9
4.2.10
4.2.11
4.2.12
4.2.13
4.2.14
4.2.15
4.2.16
4.2.17
4.2.18
4.2.19
4.2.20
4.2.21
4.2.22
4.2.23
4.2.24
4.2.25
4.2.26
4.2.27
4.2.28
4.2.29

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mvfq-ggxm-9mc5/GHSA-mvfq-ggxm-9mc5.json"