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🛡️ CVE-2026-15337 — django

🟡 CVSS 5.0 — Medium ✅ No Known Exploit CWE-789 OSV
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Potential denial-of-service vulnerability in check_for_language()

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2026-15337 is classified as CWE-789: Memory Allocation with Excessive Size Value. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

Affected software

CVE-2026-15337 is recorded against 1 package.

  • django

Timeline and source

Published on 19 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

docs.djangoproject.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
groups.google.com (Web)
nvd.nist.gov (Web)
www.djangoproject.com (Web)

Other advisories for this package

django has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-789: Memory Allocation with Excessive Size Value) in other software:

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-789
Public Exploit ✅ No
Source OSV
Published 2026-08-19
Updated 2026-08-20
Modified 2026-08-19

Affected Packages

Software From version Fixed in
django — —

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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