CVE-2025-64458 is a denial-of-service vulnerability affecting Django versions 5.1 before 5.1.14, 4.2 before 4.2.26, and 5.2 before 5.2.8, specifically on Windows systems. The flaw stems from slow NFKC normalization in Python, allowing attackers to trigger a DoS by providing specially crafted Unicode inputs to HttpResponseRedirect, HttpResponsePermanentRedirect, or redirect. With a CVSS score of 7.5 (High), this vulnerability is remotely exploitable with low attack complexity, leading to a complete loss of availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.2, < 4.2.26CPE matchmatch criteria | cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* | ||
>= 5.1, < 5.1.14CPE matchmatch criteria | cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* | ||
>= 5.2, < 5.2.8CPE matchmatch criteria | cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.