CVE-2026-33033
Publication date 7 April 2026
Last updated 9 April 2026
Ubuntu priority
Description
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| python-django | 26.10 stonking |
Fixed in 3:5.2.9-0ubuntu4
|
| 26.04 LTS resolute |
Fixed in 3:5.2.9-0ubuntu4
|
|
| 24.04 LTS noble |
Fixed in 3:4.2.11-1ubuntu1.15
|
|
| 22.04 LTS jammy |
Fixed in 2:3.2.12-2ubuntu1.26
|
|
| 20.04 LTS focal |
Fixed in 2:2.2.12-1ubuntu0.29+esm8
|
|
| 18.04 LTS bionic |
Fixed in 1:1.11.11-1ubuntu1.21+esm15
|
|
| 16.04 LTS xenial |
Fixed in 1.8.7-1ubuntu5.15+esm12
|
|
| 14.04 LTS trusty |
Fixed in 1.6.11-0ubuntu1.3+esm11
|
Get expanded security coverage with Ubuntu Pro
Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.
Get Ubuntu Pro 30-day free trialSeverity score breakdown
CVSS version: CVSS v3.0
Base score
6.5 · Medium
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8154-1
- Django vulnerabilities
- 7 April 2026
- USN-8154-2
- Django vulnerabilities
- 9 April 2026