How serious is CVE-2026-25673?

This vulnerability has a CVSS score of 7.5 out of 10, classified as HIGH severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-25673?

Yes, proof-of-concept exploit code for CVE-2026-25673 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-25673?

CVE-2026-25673 affects djangoproject django. Check the full CVE details for specific version information.

How do I fix CVE-2026-25673?

To remediate CVE-2026-25673, check for security patches from djangoproject. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-25673

High

|7.5

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to crash a Django application by sending it overly long URLs that contain specific Unicode characters, leading to a denial of service. It affects certain versions of Django before specific updates, and the problem arises from how the framework processes these URLs on Windows systems.

Technical Description

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.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactNone

Integrity ImpactNone

Availability ImpactHigh

ScopeUnchanged

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$2,053($1K-$5K)

Vendor Response

Grade APatched in 1 day

Quick Information

Published

Mar 3, 2026

about 1 month ago

Last Modified

Mar 5, 2026

about 1 month ago

Vendor

djangoproject

Product

django

Related Vulnerabilities

CVE-2026-25674Low

This vulnerability allows an attacker to create files with incorrect permissions in Django applications, potentially exposing sensitive data or allowing unauthorized access. It occurs when multiple requests are processed at the same time, and a temporary change in file permissions by one request affects others, but it only affects specific versions of Django before certain updates.