CVE catalog
CVE-2021-33571
python-django: CVE-2021-33571
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 5.26% · Oct 25, 2026
In Django 2.2 before 2.2.24, 3.x before 3.1.12, and 3.2 before 3.2.4, URLValidator, validate_ipv4_address, and validate_ipv46_address do not prohibit leading zero characters in octal literals. This may allow a bypass of access control that is based on IP addresses. (validate_ipv4_address and validate_ipv46_address are unaffected with Python 3.9.5+..) .
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 | 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 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-django | source | sid | 2:2.2.24-1 | not yet assigned | Not reported | [989394] |
| Debian | python-django | source | forky | 2:2.2.24-1 | not yet assigned | Not reported | [989394] |
| Debian | python-django | source | trixie | 2:2.2.24-1 | not yet assigned | Not reported | [989394] |
| Debian | python-django | source | bookworm | 2:2.2.24-1 | not yet assigned | Not reported | [989394] |
| Ubuntu | python-django | deb | 20.04 | 2:2.2.12-1ubuntu0.7 | Not reported | UBUNTU-CVE-2021-33571 | 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:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u3· all · bookwormFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityFixed · Fixed:
2:2.2.24-1dsa · 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:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u3· all · bookwormFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · bookworm; dsa · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityFixed · Fixed:
2:2.2.24-1dsa · 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:
2:2.2.24-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u2· all · trixieFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
- [python-django-doc]Unknown
Source package: [python-django]
Details (6)
3:4.2.28-0+deb13u2· all · trixieFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u2· all · trixieFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityFixed · Fixed:
2:2.2.24-1dsa · python-django · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2021:3490]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2021_1962-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-33571]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-33571]
- [https://security-tracker.debian.org/tracker/CVE-2021-33571]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]