CVE-2026-54779mediumCWE-294CWE-613

CVE-2026-54779: fallo de gravedad media en CoreWCF

CoreWCF: SAML token replay protection is inoperative

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.

13Vexday Risk Score

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

ssvc Trackcvss 5.9epss 0.4%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Productos afectados
CoreWCF · CoreWCF
CVEs relacionadas — CoreWCF

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-54772HIGHCoreWCF: Pre-authentication infinite-loop CPU exhaustion in CoreWCF net.tcp / net.pipe / net.uds framing handshakeEPSS 0.8%CVE-2026-54775MEDIUMCoreWCF: Kafka consume pump halts permanently on a Kafka tombstone (null-value record), causing persistent endpoint denial of service.EPSS 0.6%CVE-2024-28252HIGHCoreWCF NetFraming based services can leave connections open when they should be closedEPSS 0.6%CVE-2026-54782CRITICALCoreWCF: Authentication bypass in CoreWCF SAML 1.1 / 2.0 token signature validationEPSS 0.4%CVE-2026-54773MEDIUMCoreWCF: WS-Security signature substitution via document-wide Signature lookupEPSS 0.4%CVE-2026-54784HIGHCoreWCF: SPNEGO SecurityContextToken proof key wrapped without confidentialityEPSS 0.3%