Vulnerability advisory

GHSA-vrcr-9hj9-jcg6

Django is vulnerable to DoS via XML serializer text extraction

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

Also known as BIT-django-2025-64460CVE-2025-64460PYSEC-2025-109

Severity

CVSS 4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Affected versions

django PyPI

All django advisories →

Affected	Fixed in
`5.2a1` to before 5.2.9	`5.2.9`Advisories →
Also listed as affected (12) `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` `5.2a1` `5.2b1` `5.2rc1`
`5.1a1` to before 5.1.15	`5.1.15`Advisories →
Also listed as affected (18) `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` `5.1a1` `5.1b1` `5.1rc1`
`4.2a1` to before 4.2.27	`4.2.27`Advisories →
Also listed as affected (30) `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` `4.2a1` `4.2b1` `4.2rc1`

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.

GHSA-vrcr-9hj9-jcg6

Affected versions

django PyPI

Description

References