GHSA-rpj7-hr7h-w6p9

Source

https://github.com/advisories/GHSA-rpj7-hr7h-w6p9

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-rpj7-hr7h-w6p9/GHSA-rpj7-hr7h-w6p9.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-rpj7-hr7h-w6p9

Aliases

CVE-2026-54774

Published

2026-06-19T20:46:46Z

Modified

2026-06-19T21:00:15.997594295Z

Severity

7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator

Summary

CoreWCF: SamlSerializer skips SignatureValue verification when SAML signing token is not an X.509 certificate

Details

Impact

When a service is configured to validate SAML tokens using a method other than X.509 certificate signing, the final signature verification is skipped.

Preconditions

The service is configured to authenticate using SAML tokens and an out of band token resolver (commonly the IssuerTokenResolver of IssuedTokenServiceCredential) holds a non-X.509 SecurityToken whose key identifier the attacker can reference in the assertion’s <KeyInfo> - for example a BinarySecretSecurityToken representing the symmetric proof key issued by a WS-Trust symmetric-key holder-of-key STS.

Patches

Fixed in CoreWCF v1.8.1 and v1.9.1

Workarounds

None

Database specific

{
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-19T20:46:46Z",
    "nvd_published_at": null,
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-345",
        "CWE-347"
    ]
}

References

Affected packages

NuGet / CoreWCF.Primitives

Package

Name: CoreWCF.Primitives; View open source insights on deps.dev
Purl: pkg:nuget/CoreWCF.Primitives

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.8.1

Affected versions

0.*

0.1.0-preview

0.1.0-preview-2

0.1.0

0.2.0

0.2.1

0.3.0

0.3.1

0.3.2

0.4.0

1.*

1.0.0-preview1

1.0.0-preview2

1.0.0

1.0.1

1.0.2

1.1.0

1.1.1

1.2.0

1.2.1

1.3.0

1.3.1

1.3.2

1.4.0-preview1

1.4.0

1.4.1

1.4.2

1.5.0-preview1

1.5.0

1.5.1

1.5.2

1.6.0

1.7.0

1.8.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-rpj7-hr7h-w6p9/GHSA-rpj7-hr7h-w6p9.json"