Vulnerability · Published Aug 4, 2026 · Assigned by DSF
CVE-2026-15830Potential denial-of-service vulnerability via nested geometry collections
Medium 5.3
In plain English
A medium-severity security flaw in Django from djangoproject. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An issue was discovered in Django 6.0 before 6.0.9 and 5.2 before 5.2.18. 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | py3-django | 5.2.17-r0 | ALPINE-CVE-2026-15830 |
| Debian:12 | python-django | no fix listed | DEBIAN-CVE-2026-15830 |
| Debian:13 | python-django | no fix listed | DEBIAN-CVE-2026-15830 |
| Debian:14 | python-django | 3:5.2.17-1 | DEBIAN-CVE-2026-15830 |
| PyPI | django | 5.2.17, 6.0.8 | PYSEC-2026-3717 |
| PyPI | django | 6.0.8 | GHSA-q238-5cxm-5c9h |
| PyPI | django | 5.2.17 | GHSA-q238-5cxm-5c9h |
| PyPI | django | 6.1.1 | GHSA-q238-5cxm-5c9h |
| Ubuntu:22.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-15830 |
| Ubuntu:24.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-15830 |
| Ubuntu:26.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-15830 |
| Ubuntu:26.10 | python-django | no fix listed | UBUNTU-CVE-2026-15830 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| djangoproject | Django | 6.0 – before 6.0.95.2 – before 5.2.18 |
Weakness: CWE-674 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- Django security archive vendor-advisory
- Django releases announcements mailing-list
- https://github.com/django/django/commit/d2e59b77fe18de318a8272c2a7bbc798d84d1d0d patch
- https://github.com/django/django/commit/9e4a3f186b6b07b483bfd9195ea06734663fcd06 patch
- https://github.com/django/django/commit/6af5da31775417c610dbf9c3f1b5b8333d42daf6 patch
- https://github.com/django/django/commit/ba80833fa656dd09660b97c4429331067db1b080 patch
- Django security releases issued: 6.0.8 and 5.2.17 vendor-advisory
- https://github.com/django/django/commit/62ef9d40cf4ea75f16518436b44b8ab2515340df patch
- https://github.com/django/django/commit/75d401a1491e04a907ed745c128836d51c982c0f patch
- https://github.com/django/django/commit/4353dfb56f8ba3a6fccc4bdd7f2ef2fbee3aa638 patch
- https://github.com/django/django/commit/1eafa1a80f1363283f89208ba4499ed54e35f085 patch