CVE-2026-54781highCWE-287CWE-345

CVE-2026-54781: fallo de gravedad alta en CoreWCF

CoreWCF: SAML SubjectConfirmation methods and holder-of-key proof keys are not enforced

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear CoreWCF+ Monitorear CoreWCF.Primitives

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 7.4epss 0.2%
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF SAML token validation does not enforce SubjectConfirmation method URIs or holder-of-key proof keys in SamlSecurityTokenHandler, allowing holder-of-key downgrade or custom confirmation method assertions to authenticate a subject without proving authority over the assertion. This issue is fixed in versions 1.8.1 and 1.9.1.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Productos afectados
CoreWCF · CoreWCF
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