CVE-2026-54778: fallo de gravedad media en CoreWCF
CoreWCF: UnixDomainSocket Non-Reentrant POSIX Identity Resolution
Publicada el · Actualizada el
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 6.2epss 0.1%
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 UnixDomainSocket POSIX peer identity resolution uses non-reentrant getpwuid and getgrgid calls, allowing concurrent connections to attribute one connection's identity to another or crash the host process under contention. This issue is fixed in versions 1.8.1 and 1.9.1.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Productos afectados
CoreWCF · CoreWCFCVEs 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-2026-54779MEDIUMCoreWCF: SAML token replay protection is inoperativeEPSS 0.4%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%
Referencias
https://github.com/CoreWCF/CoreWCF/commit/a3d95ea4627b818995e92c7def4c016164cacfcehttps://github.com/CoreWCF/CoreWCF/commit/b0acb105589b455a095ea5ff49f5191e4eeff791https://github.com/CoreWCF/CoreWCF/commit/b4867547c94bb088568935d581a55dda18a621e1https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-q6v9-43v5-jv9q