CVE-2026-33033
Publication date 7 April 2026
Last updated 8 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 | 25.10 questing |
Fixed 3:5.2.4-1ubuntu2.4
|
| 24.04 LTS noble |
Fixed 3:4.2.11-1ubuntu1.15
|
|
| 22.04 LTS jammy |
Fixed 2:3.2.12-2ubuntu1.26
|
|
| 20.04 LTS focal |
Fixed 2:2.2.12-1ubuntu0.29+esm8
|
|
| 18.04 LTS bionic |
Fixed 1:1.11.11-1ubuntu1.21+esm15
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
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| Parameter | Value |
|---|---|
| Base score |
6.5 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| 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