CVE-2026-33033
Fixed in a distro release EPSS <1%CVSS 6.5
An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace. 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.
Products: djangoproject django
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | django | 6.0.4 |
| PyPI | django | 5.2.13 |
| PyPI | django | 4.2.30 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | authentik-2025.12 | 2025.12.4-r3 |
| Chainguard | authentik-2026.2 | 2026.2.1-r3 |
| Chainguard | authentik-fips-2025.12 | 2025.12.4-r3 |
| Chainguard | authentik-fips-2026.2 | 2026.2.1-r3 |
| Chainguard | awx | 24.6.1-r34 |
| Chainguard | label-studio | 1.23.0-r3 |
| Debian 12 | python-django | no fix |
| Debian 13 | python-django | no fix |
| Debian 14 | python-django | 3:4.2.30-1 |
| Ubuntu 22.04 LTS | python-django | 2:3.2.12-2ubuntu1.26 |
| Ubuntu 24.04 LTS | python-django | 3:4.2.11-1ubuntu1.15 |
| Ubuntu 25.10 | python-django | 3:5.2.4-1ubuntu2.4 |
| Ubuntu 26.04 LTS | python-django | 3:5.2.9-0ubuntu4 |
| Ubuntu 26.10 | python-django | 3:5.2.9-0ubuntu4 |
| Ubuntu Pro 14.04 LTS | python-django | 1.6.11-0ubuntu1.3+esm11 |
| Ubuntu Pro 16.04 LTS | python-django | 1.8.7-1ubuntu5.15+esm12 |
| Ubuntu Pro 18.04 LTS | python-django | 1:1.11.11-1ubuntu1.21+esm15 |
| Ubuntu Pro 20.04 LTS | python-django | 2:2.2.12-1ubuntu0.29+esm8 |
| openSUSE Leap 16.0 | python-Django | 5.2.4-bp160.7.1 |
| openSUSE Tumbleweed | python-Django | 5.2.13-1.1 |
| openSUSE Tumbleweed | python-Django4 | 4.2.30-1.1 |
| openSUSE Tumbleweed | python-Django5 | 5.2.16-1.1 |
| openSUSE Tumbleweed | python-Django6 | 6.0.4-1.1 |