CVE-2026-15830: Django Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-q238-5cxm-5c9h
Share
CVSS 5.3
CWE-674
Published
Advisory Summary

CVE-2026-15830 is a MODERATE (CVSS 5.3) denial of service vulnerability (CWE-674: Uncontrolled Recursion) affecting Django libraries in the PyPI ecosystem. The issue involves django geodjango vulnerable to denial of service through deeply nested geometry collections. Remediation is available by upgrading affected packages to version 5.2.17, 6.0.8, 6.1.1.

CVE-2026-15830 at a Glance

CVE Identifier CVE-2026-15830
GHSA Identifier GHSA-q238-5cxm-5c9h
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-674: Uncontrolled Recursion
Affected Product Django
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability Low (A:L)

How to Fix CVE-2026-15830

To remediate this vulnerability, upgrade all affected Django dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

django fixed: 5.2.17 
pip install django>=5.2.17
django fixed: 6.0.8 
pip install django>=6.0.8
django fixed: 6.1.1 
pip install django>=6.1.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show django

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-15830, inspect your installed packages using pip:

pip show django

Analyze the terminal output to locate any version of Django in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.2.17), your application is affected.

Note: The pip show django command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-674: Uncontrolled Recursion, where the product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. In Django, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

An issue was discovered in Django 5.2 before 5.2.17 and 6.0 before 6.0.8. GeoDjango's `django.contrib.gis.geos.GEOSGeometry` is subject to a potential denial-of-service when parsing deeply nested `GEOMETRYCOLLECTION` objects supplied as well-known text (WKT), well-known binary (WKB), or hex-encoded WKB, which triggers unbounded recursion and a segmentation fault in the underlying GEOS library. Spatial field lookups and the `django.contrib.gis.forms.GeometryField` form field are also affected. 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 Andrew MacPherson and kimchunbok_ for reporting this issue.

CVE-2026-15830 Affected Django Versions

3 component(s)
Fixed Versions:
5.2.176.0.86.1.1
Product / Package Ecosystem Affected Versions Fixed Version
django
pypi/django
PyPI
< 5.2.17
5.2.17
django
pypi/django
PyPI
≥ 6.0a1
< 6.0.8
6.0.8
django
pypi/django
PyPI
≥ 6.1a1
< 6.1.1
6.1.1

References

NVD — CVE-2026-15830 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15830
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/1eafa1a80f1363283f89208ba4499ed54e35f085
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/4353dfb56f8ba3a6fccc4bdd7f2ef2fbee3aa638
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/62ef9d40cf4ea75f16518436b44b8ab2515340df
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/6af5da31775417c610dbf9c3f1b5b8333d42daf6
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/75d401a1491e04a907ed745c128836d51c982c0f
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/9e4a3f186b6b07b483bfd9195ea06734663fcd06
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/ba80833fa656dd09660b97c4429331067db1b080
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/d2e59b77fe18de318a8272c2a7bbc798d84d1d0d
Django Release RELEASE
https://docs.djangoproject.com/en/dev/releases/security
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-q238-5cxm-5c9h
Django Source Repository REPOSITORY
https://github.com/django/django
Django Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-3717.yaml
groups.google.com/g/django-announce WEB
https://groups.google.com/g/django-announce
Django Release RELEASE
https://www.djangoproject.com/weblog/2026/aug/04/security-releases

Frequently Asked Questions

What is CVE-2026-15830?
CVE-2026-15830 is a security vulnerability in Django involving Django GeoDjango vulnerable to denial of service through deeply nested geometry collections under CWE-674: Uncontrolled Recursion.
Which Django versions are affected?
Affected versions include releases prior to 5.2.17, 6.0.8, 6.1.1 across affected packages: django.
What version fixes CVE-2026-15830?
Upgrading to 5.2.17, 6.0.8, 6.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is django affected?
Yes, django is affected in releases prior to 5.2.17, 6.0.8, 6.1.1. Upgrade your dependency to 5.2.17, 6.0.8, 6.1.1 or later.
What is the CVSS score of CVE-2026-15830?
CVE-2026-15830 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2026-15830?
CVE-2026-15830 is classified under CWE-674: Uncontrolled Recursion (The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.).
How can I check PyPI dependencies for CVE-2026-15830?
Run the dependency tree command: 'pip show django'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q238-5cxm-5c9h",
  "modified" : "2026-10-12T14:36:03Z",
  "published" : "2026-08-04T18:31:27Z",
  "aliases" : [ "CVE-2026-15830" ],
  "summary" : "Django GeoDjango vulnerable to denial of service through deeply nested geometry collections",
  "details" : "An issue was discovered in Django 5.2 before 5.2.17 and 6.0 before 6.0.8.\nGeoDjango's `django.contrib.gis.geos.GEOSGeometry` is subject to a potential denial-of-service when parsing deeply nested `GEOMETRYCOLLECTION` objects supplied as well-known text (WKT), well-known binary (WKB), or hex-encoded WKB, which triggers unbounded recursion and a segmentation fault in the underlying GEOS library. Spatial field lookups and the `django.contrib.gis.forms.GeometryField` form field are also affected.\nEarlier, unsupported Django series (such as 5.1.x, 5.0.x, and 4.2.x) were not evaluated and may also be affected.\nDjango would like to thank Andrew MacPherson and kimchunbok_ for reporting this issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "django"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.2.17"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "django"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0a1"
      }, {
        "fixed" : "6.0.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "django"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.1a1"
      }, {
        "fixed" : "6.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-15830"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/1eafa1a80f1363283f89208ba4499ed54e35f085"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/4353dfb56f8ba3a6fccc4bdd7f2ef2fbee3aa638"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/62ef9d40cf4ea75f16518436b44b8ab2515340df"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/6af5da31775417c610dbf9c3f1b5b8333d42daf6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/75d401a1491e04a907ed745c128836d51c982c0f"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/9e4a3f186b6b07b483bfd9195ea06734663fcd06"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/ba80833fa656dd09660b97c4429331067db1b080"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/d2e59b77fe18de318a8272c2a7bbc798d84d1d0d"
  }, {
    "type" : "WEB",
    "url" : "https://docs.djangoproject.com/en/dev/releases/security"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-q238-5cxm-5c9h"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/django/django"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-3717.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/g/django-announce"
  }, {
    "type" : "WEB",
    "url" : "https://www.djangoproject.com/weblog/2026/aug/04/security-releases"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-674" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-30T20:19:00Z",
    "nvd_published_at" : "2026-08-04T17:16:46Z"
  }
}