ALPINE-CVE-2026-25673

Source
https://security.alpinelinux.org/vuln/CVE-2026-25673
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-25673.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-25673
Upstream
Published
2026-03-03T15:16:19Z
Modified
2026-11-03T06:33:01Z
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
[none]
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.

References

Affected packages

Alpine:v3.23 / py3-django

Package

Name
py3-django
Purl
pkg:apk/alpine/py3-django?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.2.29-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-25673.json"