Security Risk Category

posix-identity Security Risks

Published vulnerability pages connected to posix-identity. One risk can appear in multiple categories while keeping one canonical page.

posix-identity risks

Showing 1 of 1 published risks.

mediumEPSS 0.001

CoreWCF Unix Domain Socket PosixIdentity Security Upgrade Bypass Vulnerability

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, a CoreWCF service hosted on Unix Domain Sockets with PosixIdentity client credentials can accept connections that skip the application/unixposix stream upgrade before dispatching messages, bypassing framing-layer identity checks in UnixPosixIdentitySecurityUpgradeProvider. This issue is fixed in versions 1.8.1 and 1.9.1.

CVE-2026-54776corewcfdotnetnugetwcf

Updated Jul 10, 2026