Vulnerability advisory

PYSEC-2025-109

Published Dec 2, 2025Updated Jun 10, 2026OSV record ↗

Also known as BIT-django-2025-64460CVE-2025-64460GHSA-vrcr-9hj9-jcg6

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected versions

django PyPI

Affected	Fixed in
`4.2` to before 4.2.27	`4.2.27`Advisories →
`5.1` to before 5.1.15	`5.1.15`Advisories →
`5.2` to before 5.2.9	`5.2.9`Advisories →
Also listed as affected (51) `4.2` `4.2.1` `4.2.10` `4.2.11` `4.2.12` `4.2.13` `4.2.14` `4.2.15` `4.2.16` `4.2.17` `4.2.18` `4.2.19` `4.2.2` `4.2.20` `4.2.21` `4.2.22` `4.2.23` `4.2.24` `4.2.25` `4.2.26` `4.2.3` `4.2.4` `4.2.5` `4.2.6` `4.2.7` `4.2.8` `4.2.9` `5.1` `5.1.1` `5.1.10` `5.1.11` `5.1.12` `5.1.13` `5.1.14` `5.1.2` `5.1.3` `5.1.4` `5.1.5` `5.1.6` `5.1.7` `5.1.8` `5.1.9` `5.2` `5.2.1` `5.2.2` `5.2.3` `5.2.4` `5.2.5` `5.2.6` `5.2.7` `5.2.8`

Description

An issue was discovered in 5.2 before 5.2.9, 5.1 before 5.1.15, and 4.2 before 4.2.27. Algorithmic complexity in django.core.serializers.xml_serializer.getInnerText() allows a remote attacker to cause a potential denial-of-service attack triggering CPU and memory exhaustion via specially crafted XML input processed by the XML Deserializer. 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 Seokchan Yoon for reporting this issue.

PYSEC-2025-109

Affected versions

django PyPI

Description

References