What is CVE-2025-27556?

CVE-2025-27556 is a medium-severity vulnerability in Djangoproject Django, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.8/10. Published 2025-04-02.

How severe is CVE-2025-27556?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Is CVE-2025-27556 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Djangoproject Django

CVE-2025-27556

An issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.views.LoginView, django.contrib.auth.views.LogoutView, and django.views.i18n.set_lan…

EPSS: 0.000 (1.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.

Affected products

Djangoproject Django — versions 5.0, 5.1

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-27556?: CVE-2025-27556 is a medium-severity vulnerability in Djangoproject Django, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.8/10. Published 2025-04-02.
How severe is CVE-2025-27556?: Medium severity. CVSS v3 base score is 5.8 out of 10.
Is CVE-2025-27556 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.