CVE catalog
CVE-2021-45115
python-django: CVE-2021-45115
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.42% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-django | sid | 3:5.2.18-1 | fixed |
| Debian | python-django | forky | 3:5.2.17-2 | fixed |
| Debian | python-django | trixie | 3:4.2.28-0+deb13u2 | fixed |
| Debian | python-django | trixie-security | 3:4.2.28-0+deb13u1 | fixed |
| Debian | python-django | bookworm | 3:3.2.25-0+deb12u3 | fixed |
| Debian | python-django | bookworm-security | 3:3.2.25-0+deb12u6 | fixed |
| Ubuntu | python-django | pro | 1.7.9-1ubuntu5 | vulnerable |
| Ubuntu | python-django | pro | 1.8.5-2ubuntu1 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu1 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu2 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu3 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu4 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.1 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.2 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.4 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.5 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.6 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.7 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.8 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.9 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.10 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.11 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.12 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.13 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.14 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm1 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm3 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm4 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm5 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm6 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm7 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm8 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm9 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm10 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm11 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm12 | vulnerable |
| Ubuntu | python-django | pro | 1.8.7-1ubuntu5.15+esm13 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.4-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.6-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.9-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.2 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.3 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.4 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.5 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.6 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.7 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.8 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.9 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.10 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.11 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.12 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.13 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.14 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.15 | fixed |
| Ubuntu | python-django | 20.04 | 1:1.11.22-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.6-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.9-2ubuntu1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.10-1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.10-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.11-1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.2 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.3 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.4 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.5 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.6 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.7 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.8 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.9 | fixed |
| Ubuntu | python-django | 18.04 | 1:1.11.4-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.6-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.9-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.1 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.2 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.3 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.4 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.5 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.6 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.7 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.8 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.9 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.10 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.11 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.12 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.13 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.14 | vulnerable |
| Ubuntu | python-django | 18.04 | 1:1.11.11-1ubuntu1.15 | fixed |
| Ubuntu | python-django | 20.04 | 1:1.11.22-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.6-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.9-2ubuntu1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.10-1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.10-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.11-1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.1 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.2 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.3 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.4 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.5 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.6 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.7 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.8 | vulnerable |
| Ubuntu | python-django | 20.04 | 2:2.2.12-1ubuntu0.9 | fixed |
| Opensuse | python-Django | tumbleweed | 4.0.1-1.1 | fixed |
| Opensuse | python-Django | tumbleweed | 5.1.5-1.1 | fixed |
| Suse | python-Django | hpe helion openstack 8 | 1.11.29-3.33.1 | fixed |
| Suse | python-Django | openstack cloud 8 | 1.11.29-3.33.1 | fixed |
| Suse | python-Django | openstack cloud crowbar 8 | 1.11.29-3.33.1 | fixed |
| Suse | python-Django1 | openstack cloud 9 | 1.11.29-3.30.1 | fixed |
| Suse | python-Django1 | openstack cloud crowbar 9 | 1.11.29-3.30.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-django | source | sid | 2:3.2.11-1 | not yet assigned | Not reported | [1003113] |
| Debian | python-django | source | forky | 2:3.2.11-1 | not yet assigned | Not reported | [1003113] |
| Debian | python-django | source | trixie | 2:3.2.11-1 | not yet assigned | Not reported | [1003113] |
| Debian | python-django | source | bookworm | 2:3.2.11-1 | not yet assigned | Not reported | [1003113] |
| Ubuntu | python-django | deb | 18.04 | 1:1.11.11-1ubuntu1.15 | Not reported | UBUNTU-CVE-2021-45115 | Not reported |
| Ubuntu | python-django | deb | 20.04 | 2:2.2.12-1ubuntu0.9 | Not reported | UBUNTU-CVE-2021-45115 | Not reported |
| Ubuntu | python-django | deb | 18.04 | 1:1.11.11-1ubuntu1.15 | Not reported | USN-5204-1 | Not reported |
| Ubuntu | python-django | deb | 20.04 | 2:2.2.12-1ubuntu0.9 | Not reported | USN-5204-1 | Not reported |
| Opensuse | python-Django | rpm | tumbleweed | 4.0.1-1.1 | Not reported | OPENSUSE-SU-2024:11725-1 | Not reported |
| Opensuse | python-Django | rpm | tumbleweed | 5.1.5-1.1 | Not reported | OPENSUSE-SU-2025:14662-1 | Not reported |
| Suse | python-Django | rpm | hpe helion openstack 8 | 1.11.29-3.33.1 | Not reported | SUSE-SU-2022:0102-1 | Not reported |
| Suse | python-Django | rpm | openstack cloud 8 | 1.11.29-3.33.1 | Not reported | SUSE-SU-2022:0102-1 | Not reported |
| Suse | python-Django | rpm | openstack cloud crowbar 8 | 1.11.29-3.33.1 | Not reported | SUSE-SU-2022:0102-1 | Not reported |
| Suse | python-Django1 | rpm | openstack cloud 9 | 1.11.29-3.30.1 | Not reported | SUSE-SU-2022:0103-1 | Not reported |
| Suse | python-Django1 | rpm | openstack cloud crowbar 9 | 1.11.29-3.30.1 | Not reported | SUSE-SU-2022:0103-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [python3-django]Unknown
Source package: [python-django]
Details (6)
3:3.2.25-0+deb12u3· all · bookwormFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u3· all · bookwormFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
- [python-django-doc]Unknown
Source package: [python-django]
Details (6)
3:3.2.25-0+deb12u3· all · bookwormFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u3· all · bookwormFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
[Debian 13 (Trixie)]
- [python3-django]Unknown
Source package: [python-django]
Details (6)
3:4.2.28-0+deb13u2· all · trixieFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u2· all · trixieFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
- [python-django-doc]Unknown
Source package: [python-django]
Details (6)
3:4.2.28-0+deb13u2· all · trixieFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u2· all · trixieFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityFixed · Fixed:
2:3.2.11-1dsa · python-django · debian · 13
[openSUSE Tumbleweed]
- [python313-Django]Unknown
Source package: [python-Django]
Details (1)
6.0.8-1.1· noarch · tumbleweedUnknown · Fixed:
4.0.1-1.1, 5.1.5-1.1Version impact unknown
dsa · python-Django · opensuse · tumbleweed
- [python314-Django]Unknown
Source package: [python-Django]
Details (1)
6.0.8-1.1· noarch · tumbleweedUnknown · Fixed:
4.0.1-1.1, 5.1.5-1.1Version impact unknown
dsa · python-Django · opensuse · tumbleweed
Observed:
References
- [https://access.redhat.com/errata/RHSA-2022:5498]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2022_0102-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-45115]
- [https://osv.dev/vulnerability/DLA-3177-1]
- [https://osv.dev/vulnerability/SUSE-SU-2022:0102-1]
- [https://osv.dev/vulnerability/SUSE-SU-2022:0103-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-45115]
- [https://osv.dev/vulnerability/USN-5204-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:11725-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:14662-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-45115]
- [https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-0302.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]