GHSA-8p8v-wh79-9r56

Suggest an improvement
Source
https://github.com/advisories/GHSA-8p8v-wh79-9r56
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-8p8v-wh79-9r56/GHSA-8p8v-wh79-9r56.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-8p8v-wh79-9r56
Aliases
Downstream
Related
Published
2026-03-03T15:31:41Z
Modified
2026-03-06T19:44:13.458245Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Django vulnerable to Uncontrolled Resource Consumption
Details

An issue was discovered in 6.0 before 6.0.3, 5.2 before 5.2.12, and 4.2 before 4.2.29.

URLField.to_python() in Django calls urllib.parse.urlsplit(), which performs NFKC normalization on Windows that is disproportionately slow for certain Unicode characters, allowing a remote attacker to cause denial of service via large URL inputs containing these characters.

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 Seokchan Yoon for reporting this issue.

Database specific
{
    "cwe_ids": [
        "CWE-400",
        "CWE-770"
    ],
    "github_reviewed_at": "2026-03-04T20:24:02Z",
    "nvd_published_at": "2026-03-03T15:16:19Z",
    "severity": "HIGH",
    "github_reviewed": true
}
References

Affected packages

PyPI / django

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0
Fixed
6.0.3

Affected versions

6.*
6.0
6.0.1
6.0.2

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-8p8v-wh79-9r56/GHSA-8p8v-wh79-9r56.json"

PyPI / django

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.2
Fixed
5.2.12

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

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-8p8v-wh79-9r56/GHSA-8p8v-wh79-9r56.json"

PyPI / django

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.2
Fixed
4.2.29

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

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-8p8v-wh79-9r56/GHSA-8p8v-wh79-9r56.json"