CVE-2025-64458
Nov. 6, 2025, 7:45 p.m.
7.5
High
Description
An issue was discovered in 5.1 before 5.1.14, 4.2 before 4.2.26, and 5.2 before 5.2.8.
NFKC normalization in Python is slow on Windows. As a consequence, `django.http.HttpResponseRedirect`, `django.http.HttpResponsePermanentRedirect`, and the shortcut `django.shortcuts.redirect` were subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode 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.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Django |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-407
Inefficient Algorithmic Complexity
An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | django | django | 5.1 | <5.1.14 | / | / | / | / | / | / |
| a | django | django | 4.2 | <4.2.26 | / | / | / | / | / | / |
| a | django | django | 5.2 | <5.2.8 | / | / | / | / | / | / |
| a | django | django | 5.0 | / | / | / | / | / | / | / |
| a | django | django | 4.1 | / | / | / | / | / | / | / |
| a | django | django | 3.2 | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: NONE
- Scope: UNCHANGED
- Confidentiality Impact: NONE
- Integrity Impact: NONE
- Availability Impact: HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Timeline
Published: Nov. 5, 2025, 3:15 p.m.
Last Modified: Nov. 6, 2025, 7:45 p.m.
Last Modified: Nov. 6, 2025, 7:45 p.m.
Status : Awaiting Analysis
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.