CVE-2025-64460 Affecting authentik package, versions <2025.10.2-r2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
2.09% (80th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-AUTHENTIK-14419831
  • published15 Dec 2025
  • disclosed2 Dec 2025

Introduced: 2 Dec 2025

CVE-2025-64460  (opens in a new tab)

How to fix?

Upgrade Chainguard authentik to version 2025.10.2-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream authentik package and not the authentik package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1