CVE Watch9 jul 2026

CVE-2026-54779

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 r

CVSS

5.9

Medio

EPSS

0.3%

p19

KEV

—

Exploit Today

0-100

Publicado: 8 jul 2026 · Última mod.: 9 jul 2026 · CWE-294 · CWE-613

EPSS · 30d

0.3%EPSS · 30 días0.3%

2026-07-092026-07-21

Descripción técnica

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 replay protection is inoperative because DefaultTokenReplayCache.TryAdd does not reject duplicate tokens when DetectReplayedTokens is enabled, allowing a captured token to be reused. This issue is fixed in versions 1.8.1 and 1.9.1.

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