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CVE-2021-45115 Details

Description

An issue was discovered in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1. UserAttributeSimilarityValidator incurred significant overhead in evaluating a submitted password that was artificially large in relation to the comparison values. In a situation where access to user registration was unrestricted, this provided a potential vector for a denial-of-service attack.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://docs.djangoproject.com/en/4.0/releases/security/	CVE	PatchVendor Advisory
https://groups.google.com/forum/#%21forum/django-announce	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/	CVE
https://security.netapp.com/advisory/ntap-20220121-0005/	CVE	Third Party Advisory
https://www.djangoproject.com/weblog/2022/jan/04/security-releases/	CVE	PatchVendor Advisory
https://docs.djangoproject.com/en/4.0/releases/security/	[email protected]	PatchVendor Advisory
https://groups.google.com/forum/#%21forum/django-announce	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/	[email protected]
https://security.netapp.com/advisory/ntap-20220121-0005/	[email protected]	Third Party Advisory
https://www.djangoproject.com/weblog/2022/jan/04/security-releases/	[email protected]	PatchVendor Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-Other	Weakness Not in a Standard CWE Category	[email protected]

Affected Products

Product	Versions
djangoproject django	>= 2.2, < 2.2.26 >= 3.2, < 3.2.11 >= 4.0, < 4.0.1
CPE cpe:2.3:a:djangoproject:django:::::::: Remediation No remediation found in references.
fedoraproject fedora	35
CPE cpe:2.3:o:fedoraproject:fedora:35:::::::* Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Jul 12, 2022	CWE Remap	[email protected]
Feb 12, 2022	Modified Analysis	[email protected]
Feb 11, 2022	CVE Modified	[email protected]
Jan 21, 2022	CVE Modified	[email protected]
Jan 12, 2022	Initial Analysis	[email protected]