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Django vulnerable to Uncontrolled Resource Consumption

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advisory osv BIT-django-2026-25673 CVE-2026-25673 GHSA-8p8v-wh79-9r56

Vulnerabilities

__ CVE-2026-25673 Detail

** Modified After Enrichment **

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

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.

Metrics

**CVSS Version 4.0

**CVSS Version 3.x

**CVSS Version 2.0

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

** ** N/A

NVD assessment not yet provided. _

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided. _

ADP: CISA-ADP

Base Score: 7.5 HIGH

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

ADP: redhat-SADP

Base Score: 7.5 HIGH

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

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided. _

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)

https://access.redhat.com/security/cve/CVE-2026-25673

redhat-SADP

https://bugzilla.redhat.com/show_bug.cgi?id=2444115

redhat-SADP

https://docs.djangoproject.com/en/dev/releases/security/

Django Software Foundation

Patch

Vendor Advisory

https://groups.google.com/g/django-announce

Django Software Foundation

Release Notes

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25673.json

redhat-SADP

https://www.djangoproject.com/weblog/2026/mar/03/security-releases/

Django Software Foundation

Patch

Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source

CWE-770

Allocation of Resources Without Limits or Throttling

NIST

redhat-SADP

CWE-400

Uncontrolled Resource Consumption

Django Software Foundation

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

_ _

__ Denotes Vulnerable Software

Are we missing a CPE here? Please let us know.

Change History

7 change records found show changes

** CVE Modified by redhat-SADP 7/14/2026 10:18:56 PM **

Action Type Old Value New Value

Changed Affected

[{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Discovery 2","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:discovery:2::el9"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:satellite:6"]}]

Record truncated, showing 2048 of 3478 characters.

View Entire Change Record

[{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-24/lightspeed-rhel8","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-25/lightspeed-rhel8","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/controller-rhel9","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/eda-controller-rhel9","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/gateway-rhel9","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/hub-rhel9","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/lightspeed-rhel9","cpes":["cpe:/a:redhat:

CVE Modified by redhat-SADP 6/29/2026 11:17:43 PM

Action Type Old Value New Value

Added CVSS V3.1

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

Added CWE

CWE-770

Added Reference

https://access.redhat.com/security/cve/CVE-2026-25673

Added Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2444115

Added Reference

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25673.json

Added Affected

[{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Discovery 2","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:discovery:2::el9"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:satellite:6"]}]

CVE Modified by CISA-ADP 6/17/2026 6:25:02 AM

Action Type Old Value New Value

Added SSVC

{"timestamp":"2026-03-03T15:25:53.980126Z","id":"CVE-2026-25673","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by Django Software Foundation 6/17/2026 6:25:02 AM

Action Type Old Value New Value

Added Affected

[{"vendor":"djangoproject","product":"Django","defaultStatus":"unaffected","collectionURL":"https://pypi.org/project/Django/","packageName":"django","repo":"https://github.com/django/django/","versions":[{"version":"6.0","lessThan":"6.0.3","versionType":"semver","status":"affected"},{"version":"6.0.3","versionType":"semver","status":"unaffected"},{"version":"5.2","lessThan":"5.2.12","versionType":"semver","status":"affected"},{"version":"5.2.12","versionType":"semver","status":"unaffected"},{"version":"4.2","lessThan":"4.2.29","versionType":"semver","status":"affected"},{"version":"4.2.29","versionType":"semver","status":"unaffected"}]}]

Initial Analysis by NIST 3/05/2026 9:12:38 AM

Action Type Old Value New Value

Added CWE

CWE-770

Added CPE Configuration

OR
          *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 4.2.0 up to (excluding) 4.2.29
          *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 5.2 up to (excluding) 5.2.12
          *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.0.3

Added Reference Type

Django Software Foundation: https://docs.djangoproject.com/en/dev/releases/security/ Types: Patch, Vendor Advisory

Added Reference Type

Django Software Foundation: https://groups.google.com/g/django-announce Types: Release Notes

Added Reference Type

Django Software Foundation: https://www.djangoproject.com/weblog/2026/mar/03/security-releases/ Types: Patch, Vendor Advisory

CVE Modified by CISA-ADP 3/03/2026 11:16:20 AM

Action Type Old Value New Value

Added CVSS V3.1

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

New CVE Received from Django Software Foundation 3/03/2026 10:16:19 AM

Action Type Old Value New Value

Added 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.

Added CWE

CWE-400

Added Reference

https://docs.djangoproject.com/en/dev/releases/security/

Added Reference

https://groups.google.com/g/django-announce

Added Reference

https://www.djangoproject.com/weblog/2026/mar/03/security-releases/

Quick Info

CVE Dictionary Entry: CVE-2026-25673 NVD Published Date: 03/03/2026 NVD Last Modified: 07/14/2026 ** Source:** Django Software Foundation

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[{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Discovery 2","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:discovery:2::el9"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:satellite:6"]}]

[{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-24/lightspeed-rhel8","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-25/lightspeed-rhel8","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/controller-rhel9","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/eda-controller-rhel9","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/gateway-rhel9","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/hub-rhel9","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"ansible-automation-platform-26/lightspeed-rhel9","cpes":["cpe:/a:redhat:

[{"vendor":"djangoproject","product":"Django","defaultStatus":"unaffected","collectionURL":"https://pypi.org/project/Django/","packageName":"django","repo":"https://github.com/django/django/","versions":[{"version":"6.0","lessThan":"6.0.3","versionType":"semver","status":"affected"},{"version":"6.0.3","versionType":"semver","status":"unaffected"},{"version":"5.2","lessThan":"5.2.12","versionType":"semver","status":"affected"},{"version":"5.2.12","versionType":"semver","status":"unaffected"},{"version":"4.2","lessThan":"4.2.29","versionType":"semver","status":"affected"},{"version":"4.2.29","versionType":"semver","status":"unaffected"}]}]

OR *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 4.2.0 up to (excluding) 4.2.29 *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 5.2 up to (excluding) 5.2.12 *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.0.3

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.