Detections
Analytics

SCA: security update for CoreWCF.Primitives (GHSA-xjr9-gg9q-jx3v)

critical Tenable Cloud Security Plugin ID 443688

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 SAML 1.1 and SAML 2.0 token validation does not correctly resolve the issuer
 signing key or require signed tokens when IdentityConfiguration is used with federated bindings, allowing
 an unauthenticated remote attacker to impersonate any principal the trusted STS could issue. This issue is
 fixed in versions 1.8.1 and 1.9.1. (CVE-2026-54782)

Solution

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

See Also

https://github.com/advisories/GHSA-xjr9-gg9q-jx3v

Plugin Details

Severity: Critical

ID: 443688

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: 4.8

Percentile: 57.69

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-54782

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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-2026-54782