Security Advisory

CVE-2026-54778

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-08 22:11:55

Last updated 2026-07-09 13:23:29

Assigner GitHub_M

CVSS score 6.2

State PUBLISHED

Description

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.

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