Bug 2512934 - CVE-2026-15337 python-django5: Django: Denial-of-service vulnerability due to excessive memory consumption [fedora-all]
Summary: CVE-2026-15337 python-django5: Django: Denial-of-service vulnerability due to...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: python-django5
Version: 45
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Michel Lind
QA Contact:
URL:
Whiteboard: {"flaws": ["e1b3cf5f-72c3-47fc-85a8-8...
Depends On:
Blocks: CVE-2026-15337
TreeView+ depends on / blocked
 
Reported: 2026-08-09 17:11 UTC by Ganesh
Modified: 2026-09-18 01:16 UTC (History)
2 users (show)

Fixed In Version: python-django5-5.2.17-2.fc45 python-django5-5.2.17-2.fc43 python-django5-5.2.17-2.fc44
Clone Of:
Environment:
Last Closed: 2026-09-18 00:15:57 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Ganesh 2026-08-09 17:11:13 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

An issue was discovered in Django 5.2 before 5.2.17 and 6.0 before 6.0.8.
`django.utils.translation.check_for_language()` is subject to a potential denial-of-service attack when given many distinct, very long language codes, which are retained as keys in an in-memory cache and consume process memory. Such codes reach the function through the `django.views.i18n.set_language()` view, which is not routed by default. The consumed memory is bounded, since request data is limited by the `DATA_UPLOAD_MAX_MEMORY_SIZE` setting (default 2.5 MB) and the cache holds a fixed maximum number of entries.
Earlier, unsupported Django series (such as 5.1.x, 5.0.x, and 4.2.x) were not evaluated and may also be affected.
Django would like to thank Jaeyoung Jang for reporting this issue.

Comment 1 Aoife Moloney 2026-08-17 15:49:54 UTC
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.

Comment 2 Fedora Update System 2026-09-09 17:25:21 UTC
FEDORA-2026-6b28b4e483 (python-django5-5.2.17-2.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-6b28b4e483

Comment 3 Fedora Update System 2026-09-09 17:25:21 UTC
FEDORA-2026-950089270f (python-django5-5.2.17-2.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-950089270f

Comment 4 Fedora Update System 2026-09-10 01:47:25 UTC
FEDORA-2026-301e6e2983 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-301e6e2983`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-301e6e2983

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-09-10 02:07:36 UTC
FEDORA-2026-6b28b4e483 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-6b28b4e483`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-6b28b4e483

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-09-10 02:18:09 UTC
FEDORA-2026-950089270f has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-950089270f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-950089270f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2026-09-18 00:15:57 UTC
FEDORA-2026-950089270f (python-django5-5.2.17-2.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2026-09-18 01:01:58 UTC
FEDORA-2026-6b28b4e483 (python-django5-5.2.17-2.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 9 Fedora Update System 2026-09-18 01:16:07 UTC
FEDORA-2026-301e6e2983 (python-django5-5.2.17-2.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.


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