Detections
Analytics

SCA: security update for CoreWCF.Primitives (GHSA-2288-8h3r-cqgg)

high Tenable Cloud Security Plugin ID 443733

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. In version
 1.9.0, CoreWCF SPNEGO SecurityContextToken negotiation can expose the proof key recovered from the RSTR
 when TransportWithMessageCredential with Windows client credentials and session establishment are used,
 allowing an observer to impersonate the authenticated Windows principal and decrypt or forge WS-
 SecureConversation traffic. This issue is fixed in version 1.9.1. (CVE-2026-54784)

Solution

Update the CoreWCF.Primitives library and its related packages to version 1.9.1 or later.

See Also

https://github.com/advisories/GHSA-2288-8h3r-cqgg

Plugin Details

Severity: High

ID: 443733

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: 4.3

Percentile: 53.61

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-54784

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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-2026-54784