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Fencer Vulns
medium 5.3

CVE-2026-15337 json

Potential denial-of-service vulnerability in check_for_language()

published 2026-08-04 3 mo ago modified 2026-10-24 15 d ago also BIT-django-2026-15337 , EUVD-2026-52748

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami django 5.2.17, 6.0.8
  • djangoproject Django 5.2.17, 6.0.8
  • python-django Debian 12 3:3.2.25-0+deb12u4
  • python-django Debian 14 3:5.2.17-1

debian advisories DEBIAN-CVE-2026-15337

  • python-Django SLE Module for Package Hub 15 SP7 4.2.11-150600.3.65.1

suse advisories SUSE-SU-2026:3503-1

  • python-Django5 openSUSE Tumbleweed 5.2.17-1.1
  • python-Django openSUSE Leap 16.0 5.2.4-bp160.11.1
  • python-Django openSUSE Tumbleweed 6.0.8-1.1
  • python-Django4 openSUSE Tumbleweed 4.2.30-5.1

opensuse advisories openSUSE-SU-2026:11491-1openSUSE-SU-2026:21543-1openSUSE-SU-2026:11464-1openSUSE-SU-2026:11465-1

  • py3-django Alpine 3.24 5.2.17-r0

alpine advisories ALPINE-CVE-2026-15337

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-15337 updated cvss 5.3

django: Django: Denial-of-service vulnerability due to excessive memory consumption

  • Red Hat Ansible Automation Platform 2 python-django 5.2.12-2.el10ap, automation-controller 4.6.30-2.el9ap, ansible-automation-platform-24/hub-rhel8, ansible-automation-platform-25/hub-rhel8, ansible-automation-platform-26/hub-rhel9, ansible-automation-platform-27/hub-rhel9, +22 more
    affected: workaround, no fix available, no fix planned “Out of support scope”
  • Red Hat Discovery 2 discovery/discovery-server-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat OpenStack Platform 16.2 python-django20, python3-django20, python-django20-bash-completion Red Hat OpenStack Platform 17.1 python3-django, python-django 5.2.12-2.el10ap
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat OpenStack Platform 18.0 python-django 5.2.12-2.el10ap Red Hat Satellite 6 python-django, python2-django, python-django 5.2.12-2.el10ap, python-django-bash-completion, satellite/iop-advisor-backend-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Update Infrastructure 4 for Cloud Providers python-django 5.2.12-2.el10ap
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Update Infrastructure 5 rhui5/rhua-rhel9 Red Hat Self-service automation portal 2 ansible-automation-platform/bootc-automation-portal-rhel9
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
bitnami django
<5.2.17
>=6.0.0, <6.0.8
5.2.17
6.0.8

Affected products

  • djangoproject Django

Classification

Weakness
  • CWE-789 Memory Allocation with Excessive Size Value
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.