Detections
Analytics

SCA: security update for CoreWCF.NetNamedPipe (GHSA-6jj2-4q5c-x8g6)

medium Tenable Cloud Security Plugin ID 443642

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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 NetNamedPipe transport accepts attachment to a pre-existing named pipe instance,
 allowing local interception of NetNamedPipe traffic when an attacker races NamedPipeListener startup
 between shared memory GUID publication and service named pipe creation. This issue is fixed in versions
 1.8.1 and 1.9.1. (CVE-2026-54777)

Solution

Update the CoreWCF.NetNamedPipe library and its related packages to version 1.8.1 or later.

See Also

https://github.com/advisories/GHSA-6jj2-4q5c-x8g6

Plugin Details

Severity: Medium

ID: 443642

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 6/20/2026

Updated: 7/9/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.5

Percentile: 57.5

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.7

Temporal Score: 4.2

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:P

CVSS Score Source: CVE-2026-54777

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/19/2026

Vulnerability Publication Date: 6/19/2026

Reference Information

CVE: CVE-2026-54777