Medium severity · published Aug 4, 2026
CVE-2026-15830
Potential denial-of-service vulnerability via nested geometry collections
5.3
CVSS
1.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DJ
Django · djangoproject
6.0 before 6.0.9; 5.2 before 5.2.18 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15830
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15830
vendor-advisory
https://docs.djangoproject.com/en/dev/releases/security/
mailing-list
https://groups.google.com/g/django-announce
patch
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
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