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CVE-2026-54778

MEDIUM
6.2
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-54778
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-15 23:23 UTC
Published
2026-07-08 22:11 UTC
Last updated
2026-07-08 22:12 UTC
Primary CWE
CWE-362
CWE-362: Concurrent Execution using Shared Resource with Imp…
Vendor / Product
CoreWCF / CoreWCF
Sources
cve.org  ·  NVD

Severity & Metrics

6.2 MEDIUM CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Affected products (1)
VendorProductPlatformVersions
CoreWCF CoreWCF — >= 1.9.0, < 1.9.1, < 1.8.1
Weakness (CWE)
CWESourceDescription
CWE-362 cna CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-825 cna CWE-825: Expired Pointer Dereference
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.2 MEDIUM 3.1 cna CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
References (6)
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