Vulnerability · Published Jul 7, 2026 · Assigned by DSF
CVE-2026-53877Heap buffer over-read in GDALRaster
Medium 4.8
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 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16. `django.contrib.gis.gdal.GDALRaster` over-reads its in-memory buffer when constructed from a bytes object, which can disclose adjacent memory or cause service degradation via a potential segmentation fault when the `vsi_buffer` property is accessed. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Bence Nagy for reporting this issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | py3-django | 5.2.16-r0 | ALPINE-CVE-2026-53877 |
| Debian:12 | python-django | no fix listed | DEBIAN-CVE-2026-53877 |
| Debian:13 | python-django | no fix listed | DEBIAN-CVE-2026-53877 |
| Debian:14 | python-django | 3:5.2.16-1 | DEBIAN-CVE-2026-53877 |
| PyPI | django | 5.2.16 | GHSA-crhf-3pfg-w68w |
| PyPI | django | 6.0.7 | GHSA-crhf-3pfg-w68w |
| PyPI | django | 5.2.16, 6.0.7 | PYSEC-2026-2091 |
| Ubuntu:22.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-53877 |
| Ubuntu:24.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-53877 |
| Ubuntu:25.10 | python-django | no fix listed | UBUNTU-CVE-2026-53877 |
| Ubuntu:26.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-53877 |
| Ubuntu:26.10 | python-django | no fix listed | UBUNTU-CVE-2026-53877 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| djangoproject | Django | 6.0 – before 6.0.75.2 – before 5.2.16 |
Weakness: CWE-805 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
References
- Django security archive vendor-advisory
- Django releases announcements mailing-list
- Django security releases issued: 6.0.7 and 5.2.16 vendor-advisory